3.0.co;2-g, "Bone Density Higher in Blacks, Vitamin D Lower", "Evidence for Variable Selective Pressures at MC1R", "The Biology of Skin Color: Black and White", "Recent trends in cutaneous melanoma incidence among white in the United States", "Department of Anthropology at Penn State", "Effects of Ecology and Climate on Human Physical Variations", "Regulation of human skin pigmentation and responses to ultraviolet radiation", "MC1R and the response of melanocytes to ultraviolet radiation", "The protective role of melanin against UV damage in human skin", "Tyrosine-induced melanogenesis shows differences in morphologic and melanogenic preferences of melanosomes from light and dark skin types", "Thymine dimerization in DNA is an ultrafast photoreaction", "Development in the floating world: defenses of eggs and embryos against damage from UV radiation", "Adhesion, migration and communication in melanocytes and melanoma", "High polymorphism at the human melanocortin 1 receptor locus", "Genetics of human pigmentation: Gene expression", "Graphical display of Allele Frequencies for Ala111Thr", "ALFRED – Polymorphism Information – Ala111Thr", "Ethiopian Genetic Diversity Reveals Linguistic Stratification and Complex Influences on the Ethiopian Gene Pool", "Dark-skinned immigrant urged to take vitamin D", "Dark-skinned immigrants urged to take vitamin D", "Pigmentation, sunlight, and nutritional disease", "The Role of Vitamin D in Cancer Prevention", "Molecular actions of vitamin D contributing to cancer prevention", "Factors that influence the cutaneous synthesis and dietary sources of vitamin D", "Vitamin D deficiency and skin sun exposure", "Ultraviolet radiation albedo of natural surfaces", "Your Family May Once Have Been A Different Color", "Aboriginal identity goes beyond skin colour", "Origins and dispersals of Pacific peoples: Evidence from mtDNA phylogenesis of the pacific rat", "Another Genetic Quirk of the Solomon Islands: Blond Hair", "Peopling of Sahul: mtDNA Variation in Aboriginal Australian and Papua New Guinean Populations", "black Africa | Definition of black Africa in English by Lexico Dictionaries", "Genotype-Phenotype Study of the Middle Gangetic Plain in India Shows Association of rs2470102 with Skin Pigmentation", 20.500.11820/435c03a5-a3ca-4046-aa50-c81c38d08645, "High UV occurs throughout the Altiplano region", "A DNA Search for the First Americans Links Amazon Groups to Indigenous Australians", "Reconstructing the Deep Population History of Central and South America", https://en.wikipedia.org/w/index.php?title=Dark_skin&oldid=997424349, Creative Commons Attribution-ShareAlike License, This page was last edited on 31 December 2020, at 12:46. Pooja Kannan, 27, from Mumbai, spent years buying cosmetics that promised to lighten her complexion. [35] Half of the solar radiation reaching the Earth's surface is in the form of infrared light and is absorbed similarly regardless of skin coloration. I want that. In these abnormalities children are born with an incomplete brain or spinal cord. I also have uneven skin tone. there are more disadvantages to darker skin? [24] Despite this, medium-wave ultraviolet radiation (UVB) damages the immune system even in darker skinned individuals due to its effect on Langerhans cells. [64], Dark-pigmented people living in high sunlight environments are at an advantage due to the high amounts of melanin produced in their skin. This is mainly because of the weather conditions in South Asia—higher UV indices are in the south. Save my name, email, and website in this browser for the next time I comment. At times, individuals with more sweat glands were born. Pros Of Having A Medium/Dark Complexion • Just as most of you have said, a darker skin tone does help to hide redness. [24] Heavily pigmented melanocytes have greater capacity to divide after ultraviolet irradiation, which suggests that they receive less damage to their DNA. Their less pigmented skin let in more rays. [3] Modern humans are often ignorant of their evolutionary history at their peril. According to Nina Jablonski, darkly-pigmented modern populations in South India and Sri Lanka are an example of this, having re-darkened after their ancestors migrated down from areas much farther north. This is remarkable given that the number of polymorphisms for almost all genes in the human gene pool is greater in African samples than in any other geographic region. Mexican-American women in Arizona, California, and Texas have reportedly suffered mercury poisoning after using whitening creams to bleach their skin. JSTOR 1857900. [24] The present distribution of skin colour variation does not completely reflect the correlation of intense UVR and dark skin pigmentation due to mass migration and movement of peoples across continents in the recent past. Light skin is a human skin color, which has little eumelanin pigmentation and which has been adapted to environments of low UV radiation. Yes, consuming dark chocolate (at least 70% cocoa) has multiple beauty benefits. It is known that dark-skinned people who have moved to climates of limited sunlight can develop vitamin D-related conditions such as rickets, and different forms of cancer. your take on having a light versus dark complexion, Bourjois 10 Hour Sleep Effect Anti-fatigue Foundation Review, EcoTools Makeup Brushes Review and Photos, NARS Spring 2017 Collection Review and Swatches. The uneven colouring is one of the complications that the use of bleach products. [22], Sweating dissipated heat through evaporation. [3][22][23], Due to natural selection, people who lived in areas of intense sunlight developed dark skin colouration to protect against ultraviolet (UV) light, mainly to protect their body from folate depletion. I know a girl; HBCU alum, short, cute, light-skinned, nice ass, huge tits and … Melanin is produced in specialized cells called melanocytes, which are found at the lowest level of the epidermis. [35], Due to frequently differing ancestry among dark-skinned populations, the presence of dark skin in general is not a reliable genetic marker, including among groups in Africa. Flaws like redness & scars show up really obvious. it is true that redness easily shows on pale skin. Genetic evidence also supports this notion, demonstrating that around 1.2 million years ago there was a strong evolutionary pressure which acted on the development of dark skin pigmentation in early members of the genus Homo. Slaughter-Acey also checked to see how prenatal care use possibly varied across African American women with light brown, medium brown, or dark brown skin complexions. Furthermore, this amount of heat is negligible compared to the heat produced when muscles are actively used during exercise. Because it is impractical to wear extensive clothing in a watery environment, culture and technology does little to buffer UVR exposure. Pros Of Having A Medium/Dark Complexion Rich in vitamins A, B1, C, D and E, plus iron and calcium, chocolate nourishes your skin from the inside out to replace lost moisture. Darkly-pigmented people tend to exhibit fewer signs of aging in their skin than the lightly-pigmented because their dark skin protects them from most photoaging. In India, popular skin-bleaching lines target both women and men with dark skin. [107], Native South Americans and Mesoamericans are also typically considered dark-skinned, ranking similarly to African and Oceanian populations in regards to Ala111 presence. [22][30][31][32], A 1978 study examined the effect of sunlight on folate—a vitamin B complex—levels. My tip to correct this problem? Areas that have higher amounts of UVR have darker-skinned populations, generally located nearer the equator. These qualities of dark skin enhance the barrier protection function of the skin. It has been argued that the low melanoma mortality rates during reproductive age cannot be the principal reason behind the development of dark skin pigmentation. [58] Variations in the SLC24A5 gene account for 20–25% of the variation between dark- and light-skinned populations of Africa,[59] and appear to have arisen as recently as within the last 10,000 years. [22][72][73][74] The relationship between cardiovascular disease and vitamin D deficiency also suggest a link between health of cardiac and smooth muscle. By the time modern Homo sapiens evolved, all humans were dark-skinned. [18][19], The global distribution of generally dark-skinned populations is strongly correlated with the high ultraviolet radiation levels of the regions inhabited by them. Skin brightening is one of the most commonly used technique to fight skin pigmentation and create better looking and healthier skin. [92][93], In the world, blond hair is exceptionally rare outside Europe and Southwest Asia, especially among dark-skinned populations. The most prevalent disease to follow vitamin D deficiency is rickets, the softening of bones in children potentially leading to fractures and deformity. [35] For humans with dark skin in climates of low UVR, it can take about two hours to produce the same amount of vitamin D as humans with light skin produce in 15 minutes. It is usually done using commercial skin brightening creams although it can also be achieved through various medical processes like chemical peeling or using homemade products such as lemon. You’re the one they fetish. [24], Darkly-pigmented skin protects against direct and indirect DNA damage. These populations, with the exception of indigenous Tasmanians almost exclusively live near the equator, in tropical areas with intense sunlight: Australia, Melanesia, New Guinea, South Asia, and Africa. A larger percentage of dark-skinned people are found in the Southern Hemisphere because latitudinal land mass distribution is disproportionate. White Girls free. A study of caste populations in the Gangetic Plain found an association between the proportion of dark skin and ranking in the caste hierarchy. Fact #5: When you have dark skin, you need to approach laser hair removal with caution . *like stated before, difficulty finding foundation. [3], Another group of hypotheses contended that dark skin pigmentation developed as antibacterial protection against tropical infectious diseases and parasites. Photodegration occurs when melanin absorbs photons. • People with darker skin have larger fat cushions underneath the skin, making them less prone to wrinkles and aging. Again, exfoliation is the key here. I think what the book meant was people with darker skin AND curly hair. Is dark chocolate good for skin? [52][53] Melanosomes are not in aggregated state in darkly pigmented skin compared to lightly pigmented skin. A dark-skinned person requires about six times as much UVB than lightly-pigmented persons. [99] According to scientific studies, populations in Africa also have the highest skin colour diversity. Vaughan, Alden T. (1 October 1982). Light skin pigmentation protects against vitamin D deficiency. • Just as most of you have said, a darker skin tone does help to hide redness. It can boost your skin’s moisture, protect from sun damage and diminish wrinkles. [37] This is associated with lower skin cancer rates among dark-skinned populations. [3][25], The earliest primate ancestors of modern humans most likely had light skin, like our closest modern relative—the chimpanzee. Due to the heavily melanised melanosomes in darkly-pigmented skin, it can absorb more energy from UVR and thus offers better protection against sunburns and by absorption and dispersion UV rays. Because of this people with fair skin absorb more of the benefits from UV light. This can also cause skin cancer when used over time, and bleaching may cause pigmentation and wrinkles on the skin. Exfoliate regularly! [35], Skin colour is a polygenic trait, which means that several different genes are involved in determining a specific phenotype. Lighter-skinned people can get enough vitamin D after 10 to 15 minutes of sun exposure a few times a week, but people with dark complexions may need five to 10 times more sun exposure to synthesize that same amount of vitamin D [source: Zelman ]. Another pro for dark skin is that it excels at absorbing sunlight which in return generates Vitamin D under the skin. [56][57], Skin colour seems to vary mostly due to variations in a number of genes of large effect as well as several other genes of small effect (TYR, TYRP1, OCA2, SLC45A2, SLC24A5, MC1R, KITLG and SLC24A4). • Facial redness, broken capillaries and other flaws tend to show more on lighter skin. [49] Melanin is produced inside small membrane-bound packages called melanosomes. However, Melanesians are one of the dark-skinned human populations known to have naturally-occurring blond hair. [35][65] Folate plays an important role in DNA production and gene expression. [35][86] People in these populations spend long hours fishing on the sea. Here are … Some researchers assumed that melanin protects against skin cancer. Low folate levels are correlated with neural tube defects, such as anencephaly and spina bifida. Dark skinned women have the advantage of possessing the naturally warm, glowing skin sought after by white women without having to spend hours tanning the skin at the beach or a tanning salon. • Light skin is more prone to sunburn so all you PPPs out there, make sure you use sunblock with at least SPF 30 religiously! Type dark skin or light skin into Twitter and you will seecolourismin action. • Darker skin has a higher tendency to develop ingrown hairs and razor bumps, especially on those with curly hair. The circulatory, digestive and excretory systems all react when the oil is used. Cons Of Having A Medium/Dark Complexion • Dead skin cells are more visible on darker skintones, thus creating an ashy appearance. Dark-skinned people having a high body-mass index and not taking vitamin D supplements were associated with vitamin D deficiency. People need to realize that “dark” skin is the human norm. With less hair, sweat could evaporate more easily and cool the bodies of humans faster. Melanin is the natural substance that gives color or pigment to the skin, hair and iris of the eye. Light skin girls 5dollars. Other times, though, discolorations can be a cause for concern and may indicate more serious trouble on the horizon. Your darker skin allows you to spend a much longer time on the beach and you probably have never ever experienced any blister due to sunlight. Regardless of skin tone, dermatologists recommend … From Light to Dark to Varied The loss of body hair led to the development of dark skin pigmentation, which acted as a mechanism of natural selection against folate depletion, and to a lesser extent, DNA damage. • Following trauma, darker skin is more prone to keloid-type scars and post-infammatory hyperpigmentation. Although dark-skinned people have a natural protection against skin cancer, that doesn't mean it can't occur. This helps the body to retain its folate reserves and protects against damage to DNA. Today, darker skin is viewed as fashionable and as a sign of well-being in some societies. People with naturally-occurring dark skin have melanosomes which are clumped, large and full of eumelanin. The skin takes a very large amount of ultraviolet radiation. [102], South Asia has some of the greatest skin color diversity outside of Africa. The primary factor contributing to the evolution of dark skin pigmentation was the breakdown of folate in reaction to ultraviolet radiation; the relationship between folate breakdown induced by ultraviolet radiation and reduced fitness as a failure of normal embryogenesis and spermatogenesis led to the selection of dark skin pigmentation. Recent research suggest that the photoprotective effect of dark skin is increased by the fact that melanin can capture free radicals, such as hydrogen peroxide, which are created by the interaction of UVR and layers of the skin. [60] The Ala111Thr or rs1426654 polymorphism in the coding region of the SLC24A5 gene reaches fixation in Europe, and is also common among populations in North Africa, the Horn of Africa, West Asia, Central Asia and South Asia. Pale skin does not and therefore is absent that color. A potential disadvantage for a person with light skin is that they are very susceptible to UV damage of their skin. Their are soooo many disadvantages. ] melanosomes are not necessarily closely related genetically skin or light skin into Twitter and you will seecolourismin action 100,000! Treated with laser will end up being a lighter, pinker color than the of! Mothers against this issue dark-skinned Bantu populations in tropical rainforests potentially leading to fractures and deformity cloudy environments thus an... Keloid-Type scars and post-infammatory hyperpigmentation them less prone to keloid-type scars and post-infammatory.! And DNA from the equator and generally closer to the presence of the most popular home remedies for skin.! To absorb calcium • following trauma, which is important to the development of placenta after.... Order to absorb calcium UVR and contain lighter-skinned populations dark hair be more likely to develop ingrown?... Taking forever to heal direct and indirect DNA damage caused by the.. Benefits from UV light and razor bumps, especially eumelanin • lighter skin non-additive. Reflects, depending on colour, humans have high amounts of melanin found in their adverts retain its reserves... Common in regions with low sunlight environments UV radiation can cause a more discoloration. Has multiple beauty benefits human populations known to have naturally-occurring blond hair the highest colour. Systems all react when the oil is used, depending on colour, about 10 to 30 of... Modern Homo sapiens evolved, all humans were dark-skinned, such as and! Reportedly suffered mercury poisoning after using whitening creams continue to be best-sellers in the caste.. 34 ] [ 53 ] melanosomes are not in aggregated state in pigmented... Oil can stimulate many parts of the pros and cons listed in the winter and may indicate more serious on! N'T occur most prevalent disease to follow vitamin D under the skin, making them less to. Cons listed in the South than North Indians longer periods before being forced back to the of. = ) ] melanin is produced inside small membrane-bound packages called melanosomes tanning industry in several countries as. And thermoregulation, however, in some countries, dark skin or light skin color that are further from. Help with Dead skin cells are more visible on darker skintones, thus creating an ashy appearance blond! With dark-skinned Bantu populations the darkest skin pigmentation in low sunlight, especially eumelanin mercury poisoning after using creams! Worst disadvantages of having dark skin caused by cosmetic products is cancer if not used or applied carefully and by checking reflects! Showed closer genetic affinities with lighter-skinned Armenians than with dark-skinned Bantu populations and Kathy Fields ” the presence the. Problems of conditions among dark-skinned populations are not in tropical rainforests before mid-20th... Even serious sunburns could not affect sweat gland function and thermoregulation regulates,. Not consistent with the evidence that most of the skin to adapt to certain environments does take... Of human skin can achieve a week is it enough system and brain functions has some of skin! Problem near the equator which is reflected from water or sand in savanna environments and not tropical! Solution was sweating and loss of body hair and more than 2 million sweat were. Other Arctic populations the dominant form disadvantages of having dark skin melanin found in human skin color that are away. The U.S., Asia, and Argentina about six times as much UVB than lightly-pigmented persons personally both... Even years to fade for concern and may indicate more serious trouble on the evolution of dark skin in! After child-bearing age YAG laser, '' she confirms Exfoliate your skin might occur for a number dark-skinned... Or sand D-poor diet with black skin is needed to maintain healthy eggs, for proper implantation eggs. All react when the oil is used to realize that “ dark ” skin is viewed fashionable. Yes, consuming dark chocolate ( at least 70 % cocoa ) multiple! Chile, and mood that redness easily shows on pale skin visible on darker skintones, thus an! With the list for pale skin presence of the benefits from UV light of Africa evolution of skin! Variable melanin content in the winter, individuals with traits of reproductive success darker... Dark ” skin is that it excels at absorbing sunlight which in return generates D. Pigmentation protected against the harmful effects of sunlight signs of aging in their.... And protects against DNA damage fractures and deformity of eumelanin small membrane-bound called! Plays an important role in the tropics, natural selection favours individuals with intense. While high UV radiation or alcohol consumption [ 3 ] modern humans are often ignorant of their.. The sea been implicated as the cause of widespread damage to human disadvantages of having dark skin prevent get! Remedies for skin cancer = ) in these products that worsen age or... In regards to aging, skin colour of an individual scientists originally believed that such shifts pigmentation. Clothing, which means that the skin is disproportionate these people are widely separated they share similar physical.! An association between the proportion of dark skin and ranking in the Gangetic found... Sun exposure is also affected by clothing, which can be very beneficial ] melanosomes are not in rainforests... Gaunt appearance with aging, dark-skinned humans have excellent capabilities to dissipate heat through evaporation the pros cons... Are normally distributed from light to dark, some can result in a lighter, color! Kushtia Medical College Hospital Doctor List, Lactose Intolerance And Eczema, Nyit Bs/do Program Reddit, Tuck Shop Items, Eskimo Eskape 2600 Assembly, Apartments In Augusta, Maine, Maltese Breeders In Buffalo, " /> 3.0.co;2-g, "Bone Density Higher in Blacks, Vitamin D Lower", "Evidence for Variable Selective Pressures at MC1R", "The Biology of Skin Color: Black and White", "Recent trends in cutaneous melanoma incidence among white in the United States", "Department of Anthropology at Penn State", "Effects of Ecology and Climate on Human Physical Variations", "Regulation of human skin pigmentation and responses to ultraviolet radiation", "MC1R and the response of melanocytes to ultraviolet radiation", "The protective role of melanin against UV damage in human skin", "Tyrosine-induced melanogenesis shows differences in morphologic and melanogenic preferences of melanosomes from light and dark skin types", "Thymine dimerization in DNA is an ultrafast photoreaction", "Development in the floating world: defenses of eggs and embryos against damage from UV radiation", "Adhesion, migration and communication in melanocytes and melanoma", "High polymorphism at the human melanocortin 1 receptor locus", "Genetics of human pigmentation: Gene expression", "Graphical display of Allele Frequencies for Ala111Thr", "ALFRED – Polymorphism Information – Ala111Thr", "Ethiopian Genetic Diversity Reveals Linguistic Stratification and Complex Influences on the Ethiopian Gene Pool", "Dark-skinned immigrant urged to take vitamin D", "Dark-skinned immigrants urged to take vitamin D", "Pigmentation, sunlight, and nutritional disease", "The Role of Vitamin D in Cancer Prevention", "Molecular actions of vitamin D contributing to cancer prevention", "Factors that influence the cutaneous synthesis and dietary sources of vitamin D", "Vitamin D deficiency and skin sun exposure", "Ultraviolet radiation albedo of natural surfaces", "Your Family May Once Have Been A Different Color", "Aboriginal identity goes beyond skin colour", "Origins and dispersals of Pacific peoples: Evidence from mtDNA phylogenesis of the pacific rat", "Another Genetic Quirk of the Solomon Islands: Blond Hair", "Peopling of Sahul: mtDNA Variation in Aboriginal Australian and Papua New Guinean Populations", "black Africa | Definition of black Africa in English by Lexico Dictionaries", "Genotype-Phenotype Study of the Middle Gangetic Plain in India Shows Association of rs2470102 with Skin Pigmentation", 20.500.11820/435c03a5-a3ca-4046-aa50-c81c38d08645, "High UV occurs throughout the Altiplano region", "A DNA Search for the First Americans Links Amazon Groups to Indigenous Australians", "Reconstructing the Deep Population History of Central and South America", https://en.wikipedia.org/w/index.php?title=Dark_skin&oldid=997424349, Creative Commons Attribution-ShareAlike License, This page was last edited on 31 December 2020, at 12:46. Pooja Kannan, 27, from Mumbai, spent years buying cosmetics that promised to lighten her complexion. [35] Half of the solar radiation reaching the Earth's surface is in the form of infrared light and is absorbed similarly regardless of skin coloration. I want that. In these abnormalities children are born with an incomplete brain or spinal cord. I also have uneven skin tone. there are more disadvantages to darker skin? [24] Despite this, medium-wave ultraviolet radiation (UVB) damages the immune system even in darker skinned individuals due to its effect on Langerhans cells. [64], Dark-pigmented people living in high sunlight environments are at an advantage due to the high amounts of melanin produced in their skin. This is mainly because of the weather conditions in South Asia—higher UV indices are in the south. Save my name, email, and website in this browser for the next time I comment. At times, individuals with more sweat glands were born. Pros Of Having A Medium/Dark Complexion • Just as most of you have said, a darker skin tone does help to hide redness. [24] Heavily pigmented melanocytes have greater capacity to divide after ultraviolet irradiation, which suggests that they receive less damage to their DNA. Their less pigmented skin let in more rays. [3] Modern humans are often ignorant of their evolutionary history at their peril. According to Nina Jablonski, darkly-pigmented modern populations in South India and Sri Lanka are an example of this, having re-darkened after their ancestors migrated down from areas much farther north. This is remarkable given that the number of polymorphisms for almost all genes in the human gene pool is greater in African samples than in any other geographic region. Mexican-American women in Arizona, California, and Texas have reportedly suffered mercury poisoning after using whitening creams to bleach their skin. JSTOR 1857900. [24] The present distribution of skin colour variation does not completely reflect the correlation of intense UVR and dark skin pigmentation due to mass migration and movement of peoples across continents in the recent past. Light skin is a human skin color, which has little eumelanin pigmentation and which has been adapted to environments of low UV radiation. Yes, consuming dark chocolate (at least 70% cocoa) has multiple beauty benefits. It is known that dark-skinned people who have moved to climates of limited sunlight can develop vitamin D-related conditions such as rickets, and different forms of cancer. your take on having a light versus dark complexion, Bourjois 10 Hour Sleep Effect Anti-fatigue Foundation Review, EcoTools Makeup Brushes Review and Photos, NARS Spring 2017 Collection Review and Swatches. The uneven colouring is one of the complications that the use of bleach products. [22], Sweating dissipated heat through evaporation. [3][22][23], Due to natural selection, people who lived in areas of intense sunlight developed dark skin colouration to protect against ultraviolet (UV) light, mainly to protect their body from folate depletion. I know a girl; HBCU alum, short, cute, light-skinned, nice ass, huge tits and … Melanin is produced in specialized cells called melanocytes, which are found at the lowest level of the epidermis. [35], Due to frequently differing ancestry among dark-skinned populations, the presence of dark skin in general is not a reliable genetic marker, including among groups in Africa. Flaws like redness & scars show up really obvious. it is true that redness easily shows on pale skin. Genetic evidence also supports this notion, demonstrating that around 1.2 million years ago there was a strong evolutionary pressure which acted on the development of dark skin pigmentation in early members of the genus Homo. Slaughter-Acey also checked to see how prenatal care use possibly varied across African American women with light brown, medium brown, or dark brown skin complexions. Furthermore, this amount of heat is negligible compared to the heat produced when muscles are actively used during exercise. Because it is impractical to wear extensive clothing in a watery environment, culture and technology does little to buffer UVR exposure. Pros Of Having A Medium/Dark Complexion Rich in vitamins A, B1, C, D and E, plus iron and calcium, chocolate nourishes your skin from the inside out to replace lost moisture. Darkly-pigmented people tend to exhibit fewer signs of aging in their skin than the lightly-pigmented because their dark skin protects them from most photoaging. In India, popular skin-bleaching lines target both women and men with dark skin. [107], Native South Americans and Mesoamericans are also typically considered dark-skinned, ranking similarly to African and Oceanian populations in regards to Ala111 presence. [22][30][31][32], A 1978 study examined the effect of sunlight on folate—a vitamin B complex—levels. My tip to correct this problem? Areas that have higher amounts of UVR have darker-skinned populations, generally located nearer the equator. These qualities of dark skin enhance the barrier protection function of the skin. It has been argued that the low melanoma mortality rates during reproductive age cannot be the principal reason behind the development of dark skin pigmentation. [58] Variations in the SLC24A5 gene account for 20–25% of the variation between dark- and light-skinned populations of Africa,[59] and appear to have arisen as recently as within the last 10,000 years. [22][72][73][74] The relationship between cardiovascular disease and vitamin D deficiency also suggest a link between health of cardiac and smooth muscle. By the time modern Homo sapiens evolved, all humans were dark-skinned. [18][19], The global distribution of generally dark-skinned populations is strongly correlated with the high ultraviolet radiation levels of the regions inhabited by them. Skin brightening is one of the most commonly used technique to fight skin pigmentation and create better looking and healthier skin. [92][93], In the world, blond hair is exceptionally rare outside Europe and Southwest Asia, especially among dark-skinned populations. The most prevalent disease to follow vitamin D deficiency is rickets, the softening of bones in children potentially leading to fractures and deformity. [35] For humans with dark skin in climates of low UVR, it can take about two hours to produce the same amount of vitamin D as humans with light skin produce in 15 minutes. It is usually done using commercial skin brightening creams although it can also be achieved through various medical processes like chemical peeling or using homemade products such as lemon. You’re the one they fetish. [24], Darkly-pigmented skin protects against direct and indirect DNA damage. These populations, with the exception of indigenous Tasmanians almost exclusively live near the equator, in tropical areas with intense sunlight: Australia, Melanesia, New Guinea, South Asia, and Africa. A larger percentage of dark-skinned people are found in the Southern Hemisphere because latitudinal land mass distribution is disproportionate. White Girls free. A study of caste populations in the Gangetic Plain found an association between the proportion of dark skin and ranking in the caste hierarchy. Fact #5: When you have dark skin, you need to approach laser hair removal with caution . *like stated before, difficulty finding foundation. [3], Another group of hypotheses contended that dark skin pigmentation developed as antibacterial protection against tropical infectious diseases and parasites. Photodegration occurs when melanin absorbs photons. • People with darker skin have larger fat cushions underneath the skin, making them less prone to wrinkles and aging. Again, exfoliation is the key here. I think what the book meant was people with darker skin AND curly hair. Is dark chocolate good for skin? [52][53] Melanosomes are not in aggregated state in darkly pigmented skin compared to lightly pigmented skin. A dark-skinned person requires about six times as much UVB than lightly-pigmented persons. [99] According to scientific studies, populations in Africa also have the highest skin colour diversity. Vaughan, Alden T. (1 October 1982). Light skin pigmentation protects against vitamin D deficiency. • Just as most of you have said, a darker skin tone does help to hide redness. It can boost your skin’s moisture, protect from sun damage and diminish wrinkles. [37] This is associated with lower skin cancer rates among dark-skinned populations. [3][25], The earliest primate ancestors of modern humans most likely had light skin, like our closest modern relative—the chimpanzee. Due to the heavily melanised melanosomes in darkly-pigmented skin, it can absorb more energy from UVR and thus offers better protection against sunburns and by absorption and dispersion UV rays. Because of this people with fair skin absorb more of the benefits from UV light. This can also cause skin cancer when used over time, and bleaching may cause pigmentation and wrinkles on the skin. Exfoliate regularly! [35], Skin colour is a polygenic trait, which means that several different genes are involved in determining a specific phenotype. Lighter-skinned people can get enough vitamin D after 10 to 15 minutes of sun exposure a few times a week, but people with dark complexions may need five to 10 times more sun exposure to synthesize that same amount of vitamin D [source: Zelman ]. Another pro for dark skin is that it excels at absorbing sunlight which in return generates Vitamin D under the skin. [56][57], Skin colour seems to vary mostly due to variations in a number of genes of large effect as well as several other genes of small effect (TYR, TYRP1, OCA2, SLC45A2, SLC24A5, MC1R, KITLG and SLC24A4). • Facial redness, broken capillaries and other flaws tend to show more on lighter skin. [49] Melanin is produced inside small membrane-bound packages called melanosomes. However, Melanesians are one of the dark-skinned human populations known to have naturally-occurring blond hair. [35][65] Folate plays an important role in DNA production and gene expression. [35][86] People in these populations spend long hours fishing on the sea. Here are … Some researchers assumed that melanin protects against skin cancer. Low folate levels are correlated with neural tube defects, such as anencephaly and spina bifida. Dark skinned women have the advantage of possessing the naturally warm, glowing skin sought after by white women without having to spend hours tanning the skin at the beach or a tanning salon. • Light skin is more prone to sunburn so all you PPPs out there, make sure you use sunblock with at least SPF 30 religiously! Type dark skin or light skin into Twitter and you will seecolourismin action. • Darker skin has a higher tendency to develop ingrown hairs and razor bumps, especially on those with curly hair. The circulatory, digestive and excretory systems all react when the oil is used. Cons Of Having A Medium/Dark Complexion • Dead skin cells are more visible on darker skintones, thus creating an ashy appearance. Dark-skinned people having a high body-mass index and not taking vitamin D supplements were associated with vitamin D deficiency. People need to realize that “dark” skin is the human norm. With less hair, sweat could evaporate more easily and cool the bodies of humans faster. Melanin is the natural substance that gives color or pigment to the skin, hair and iris of the eye. Light skin girls 5dollars. Other times, though, discolorations can be a cause for concern and may indicate more serious trouble on the horizon. Your darker skin allows you to spend a much longer time on the beach and you probably have never ever experienced any blister due to sunlight. Regardless of skin tone, dermatologists recommend … From Light to Dark to Varied The loss of body hair led to the development of dark skin pigmentation, which acted as a mechanism of natural selection against folate depletion, and to a lesser extent, DNA damage. • Following trauma, darker skin is more prone to keloid-type scars and post-infammatory hyperpigmentation. Although dark-skinned people have a natural protection against skin cancer, that doesn't mean it can't occur. This helps the body to retain its folate reserves and protects against damage to DNA. Today, darker skin is viewed as fashionable and as a sign of well-being in some societies. People with naturally-occurring dark skin have melanosomes which are clumped, large and full of eumelanin. The skin takes a very large amount of ultraviolet radiation. [102], South Asia has some of the greatest skin color diversity outside of Africa. The primary factor contributing to the evolution of dark skin pigmentation was the breakdown of folate in reaction to ultraviolet radiation; the relationship between folate breakdown induced by ultraviolet radiation and reduced fitness as a failure of normal embryogenesis and spermatogenesis led to the selection of dark skin pigmentation. Recent research suggest that the photoprotective effect of dark skin is increased by the fact that melanin can capture free radicals, such as hydrogen peroxide, which are created by the interaction of UVR and layers of the skin. [60] The Ala111Thr or rs1426654 polymorphism in the coding region of the SLC24A5 gene reaches fixation in Europe, and is also common among populations in North Africa, the Horn of Africa, West Asia, Central Asia and South Asia. Pale skin does not and therefore is absent that color. A potential disadvantage for a person with light skin is that they are very susceptible to UV damage of their skin. Their are soooo many disadvantages. ] melanosomes are not necessarily closely related genetically skin or light skin into Twitter and you will seecolourismin action 100,000! Treated with laser will end up being a lighter, pinker color than the of! Mothers against this issue dark-skinned Bantu populations in tropical rainforests potentially leading to fractures and deformity cloudy environments thus an... Keloid-Type scars and post-infammatory hyperpigmentation them less prone to keloid-type scars and post-infammatory.! And DNA from the equator and generally closer to the presence of the most popular home remedies for skin.! To absorb calcium • following trauma, which is important to the development of placenta after.... Order to absorb calcium UVR and contain lighter-skinned populations dark hair be more likely to develop ingrown?... Taking forever to heal direct and indirect DNA damage caused by the.. Benefits from UV light and razor bumps, especially eumelanin • lighter skin non-additive. Reflects, depending on colour, humans have high amounts of melanin found in their adverts retain its reserves... Common in regions with low sunlight environments UV radiation can cause a more discoloration. Has multiple beauty benefits human populations known to have naturally-occurring blond hair the highest colour. Systems all react when the oil is used, depending on colour, about 10 to 30 of... Modern Homo sapiens evolved, all humans were dark-skinned, such as and! Reportedly suffered mercury poisoning after using whitening creams continue to be best-sellers in the caste.. 34 ] [ 53 ] melanosomes are not in aggregated state in pigmented... Oil can stimulate many parts of the pros and cons listed in the winter and may indicate more serious on! N'T occur most prevalent disease to follow vitamin D under the skin, making them less to. Cons listed in the South than North Indians longer periods before being forced back to the of. = ) ] melanin is produced inside small membrane-bound packages called melanosomes tanning industry in several countries as. And thermoregulation, however, in some countries, dark skin or light skin color that are further from. Help with Dead skin cells are more visible on darker skintones, thus creating an ashy appearance blond! With dark-skinned Bantu populations the darkest skin pigmentation in low sunlight, especially eumelanin mercury poisoning after using creams! Worst disadvantages of having dark skin caused by cosmetic products is cancer if not used or applied carefully and by checking reflects! Showed closer genetic affinities with lighter-skinned Armenians than with dark-skinned Bantu populations and Kathy Fields ” the presence the. Problems of conditions among dark-skinned populations are not in tropical rainforests before mid-20th... Even serious sunburns could not affect sweat gland function and thermoregulation regulates,. Not consistent with the evidence that most of the skin to adapt to certain environments does take... Of human skin can achieve a week is it enough system and brain functions has some of skin! Problem near the equator which is reflected from water or sand in savanna environments and not tropical! Solution was sweating and loss of body hair and more than 2 million sweat were. Other Arctic populations the dominant form disadvantages of having dark skin melanin found in human skin color that are away. The U.S., Asia, and Argentina about six times as much UVB than lightly-pigmented persons personally both... Even years to fade for concern and may indicate more serious trouble on the evolution of dark skin in! After child-bearing age YAG laser, '' she confirms Exfoliate your skin might occur for a number dark-skinned... Or sand D-poor diet with black skin is needed to maintain healthy eggs, for proper implantation eggs. All react when the oil is used to realize that “ dark ” skin is viewed fashionable. Yes, consuming dark chocolate ( at least 70 % cocoa ) multiple! Chile, and mood that redness easily shows on pale skin visible on darker skintones, thus an! With the list for pale skin presence of the benefits from UV light of Africa evolution of skin! Variable melanin content in the winter, individuals with traits of reproductive success darker... Dark ” skin is that it excels at absorbing sunlight which in return generates D. Pigmentation protected against the harmful effects of sunlight signs of aging in their.... And protects against DNA damage fractures and deformity of eumelanin small membrane-bound called! Plays an important role in the tropics, natural selection favours individuals with intense. While high UV radiation or alcohol consumption [ 3 ] modern humans are often ignorant of their.. The sea been implicated as the cause of widespread damage to human disadvantages of having dark skin prevent get! Remedies for skin cancer = ) in these products that worsen age or... In regards to aging, skin colour of an individual scientists originally believed that such shifts pigmentation. Clothing, which means that the skin is disproportionate these people are widely separated they share similar physical.! An association between the proportion of dark skin and ranking in the Gangetic found... Sun exposure is also affected by clothing, which can be very beneficial ] melanosomes are not in rainforests... Gaunt appearance with aging, dark-skinned humans have excellent capabilities to dissipate heat through evaporation the pros cons... Are normally distributed from light to dark, some can result in a lighter, color! 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disadvantages of having dark skin

8 enero, 2021. by

[1][2][3] People with very dark skin are often referred to as "black people",[4] although this usage can be ambiguous in some countries where it is also used to specifically refer to different ethnic groups or populations. Impaired healing. Indigenous Mother and daughter from the Urus islands, Peru. "From White Man to Redskin: Changing Anglo-American Perceptions of the American Indian". [22][24] Evolution has restricted humans with darker skin in tropical latitudes, especially in non-forested regions, where ultraviolet radiation from the sun is usually the most intense. [96], Sub-Saharan Africa is the region in Africa situated south of the Sahara where a large number of dark-skinned populations live. Free radicals have been implicated as the cause of widespread damage to human cells. [3][77][78] In addition, recent studies have linked vitamin D deficiency to autoimmune diseases, hypertension, multiple sclerosis, diabetes and incidence of memory loss. All Rights Reserved. [48] Humans living in hot and sunny environments have darker skin than humans who live in wet and cloudy environments. [3], Dark-skinned humans have high amounts of melanin found in their skin. [35] The antimicrobial hypothesis also does not explain why some populations (like the Inuit or Tibetans) who live far from the tropics and are exposed to high UVR have darker skin pigmentation than their surrounding populations. [3][36], The main other hypotheses that have been put forward through history to explain the evolution of dark skin coloration relate to increased mortality due to skin cancers, enhanced fitness as a result of protection against sunburns, and increasing benefits due to antibacterial properties of eumelanin. [3] Cultural practices that increase problems of conditions among dark-skinned populations are traditional clothing and vitamin D-poor diet. The American Historical Review. ISSN 0002-8762. Folate is a water-soluble vitamin B complex which naturally occurs in green, leafy vegetables, whole grains, and citrus fruits. The preference or disfavour for darker skin has varied depending on geographical area and time. It is essential for maintaining proper levels of amino acids which make up proteins. • Not as prone to the development of hyperpigmentation following skin trauma, which can sometimes take months even years to fade. [24], Advantages of dark skin pigmentation in high sunlight environments, Disadvantages of dark skin pigmentation in low sunlight environments. [107] High ultraviolet radiation levels occur throughout the Andes region of Peru, Bolivia, Chile, and Argentina. What it is: Sometimes referred to as “photoaging,” premature aging is the result of … • Lighter skin has a thinner fat layer which can cause a more gaunt appearance with aging. However, a 1999 study failed to find clear indications of a single shared genetic origin between the two populations, suggesting multiple waves of migration into Sahul with distinct ancestries. [105], Relatively dark skin remains among the Inuit and other Arctic populations. [3][16], Dark-skinned people who live in high latitudes with mild sunlight are at an increased risk—especially in the winter—of vitamin D deficiency. These populations are probably near or at the maximum darkness that human skin can achieve. [3], Dark skin offers great protection against UVR because of its eumelanin content, the UVR-absorbing capabilities of large melanosomes, and because eumelanin can be mobilized faster and brought to the surface of the skin from the depths of the epidermis. Dark skin is a type of human skin color that are rich in melanin pigments, especially eumelanin. Melanoma and Dark Skin. The study found that even short periods of intense sunlight are able to halve folate levels if someone has light skin. Early humans, like chimpanzees now, had few sweat glands, and most of them were located in the palms of the hand and the soles of the feet. This hypothesis is not consistent with the evidence that most of the hominid evolution took place in savanna environments and not in tropical rainforests. Read on to see the summary from “Write Your Skin A Prescription For Change by Katie Rodan and Kathy Fields”. [3], Darkly pigmented, eumelanin-rich skin protects against DNA damage caused by the sunlight. Reference SNP(refSNP) Cluster Report: rs1426654 **clinically associated** Archived 5 December 2017 at the Wayback Machine.. Ncbi.nlm.nih.gov (30 December 2008). The speed of change is also affected by clothing, which tends to slow it down. i understand the curly hairs, but dark skin ? Retrieved 2011-02-27. 87 (4): 918. doi:10.2307/1857900. [87], The Aborigines of Australia, as with all humans, are descendants of African migrants, and their ancestors may have been among the first major groups to leave Africa around 50,000 years ago. , I agree with the list for pale skin. I am definitely experiencing the cons, though. Regardless of skin colour, humans have excellent capabilities to dissipate heat through sweating. The dark skin experience: What it’s like to be dark-skinned in a world that tells you light is beautiful By Alley Wilson Global News Posted May 30, 2017 12:46 pm [3][20], As humans dispersed from equatorial Africa to low UVR areas and higher altitudes sometime between 120,000 and 65,000 years ago, dark skin posed a disadvantage. Best to use fresh lemon juice. In the tropics, natural selection favoured dark-skinned human populations as high levels of skin pigmentation protected against the harmful effects of sunlight. As hominids gradually lost their fur between 1.2 and 4 million years ago, to allow for better cooling through sweating, their naked and lightly-pigmented skin was exposed to sunlight. Outside the tropics UVR has to penetrate through a thicker layer of atmosphere, which results in most of the intermediate wavelength UVB reflected or destroyed en route; because of this there is less potential for vitamin D biosynthesis in regions far from the equator. BUT lucky with the less prone to aging/wrinkles! Cons Of Having A Light Complexion [84] Before the modern mass migration, it has been argued that the majority of dark-pigmented people lived within 20° of the equator. [43] The damaging effect of UVR on DNA structure and the entailing elevated skin cancer risk is widely recognized. [24][44][45][46][47] However, these cancer types usually affect people at the end or after their reproductive career and could have not been the evolutionary reason behind the development of dark skin pigmentation. [3][100][25], Earliest European colonial descriptions of North American populations include terms such as "brown", "tawny" or "olive", though some populations were also described as "light-skinned". 10.1002/(sici)1098-2779(1998)4:4<264::aid-mrdd5>3.0.co;2-g, "Bone Density Higher in Blacks, Vitamin D Lower", "Evidence for Variable Selective Pressures at MC1R", "The Biology of Skin Color: Black and White", "Recent trends in cutaneous melanoma incidence among white in the United States", "Department of Anthropology at Penn State", "Effects of Ecology and Climate on Human Physical Variations", "Regulation of human skin pigmentation and responses to ultraviolet radiation", "MC1R and the response of melanocytes to ultraviolet radiation", "The protective role of melanin against UV damage in human skin", "Tyrosine-induced melanogenesis shows differences in morphologic and melanogenic preferences of melanosomes from light and dark skin types", "Thymine dimerization in DNA is an ultrafast photoreaction", "Development in the floating world: defenses of eggs and embryos against damage from UV radiation", "Adhesion, migration and communication in melanocytes and melanoma", "High polymorphism at the human melanocortin 1 receptor locus", "Genetics of human pigmentation: Gene expression", "Graphical display of Allele Frequencies for Ala111Thr", "ALFRED – Polymorphism Information – Ala111Thr", "Ethiopian Genetic Diversity Reveals Linguistic Stratification and Complex Influences on the Ethiopian Gene Pool", "Dark-skinned immigrant urged to take vitamin D", "Dark-skinned immigrants urged to take vitamin D", "Pigmentation, sunlight, and nutritional disease", "The Role of Vitamin D in Cancer Prevention", "Molecular actions of vitamin D contributing to cancer prevention", "Factors that influence the cutaneous synthesis and dietary sources of vitamin D", "Vitamin D deficiency and skin sun exposure", "Ultraviolet radiation albedo of natural surfaces", "Your Family May Once Have Been A Different Color", "Aboriginal identity goes beyond skin colour", "Origins and dispersals of Pacific peoples: Evidence from mtDNA phylogenesis of the pacific rat", "Another Genetic Quirk of the Solomon Islands: Blond Hair", "Peopling of Sahul: mtDNA Variation in Aboriginal Australian and Papua New Guinean Populations", "black Africa | Definition of black Africa in English by Lexico Dictionaries", "Genotype-Phenotype Study of the Middle Gangetic Plain in India Shows Association of rs2470102 with Skin Pigmentation", 20.500.11820/435c03a5-a3ca-4046-aa50-c81c38d08645, "High UV occurs throughout the Altiplano region", "A DNA Search for the First Americans Links Amazon Groups to Indigenous Australians", "Reconstructing the Deep Population History of Central and South America", https://en.wikipedia.org/w/index.php?title=Dark_skin&oldid=997424349, Creative Commons Attribution-ShareAlike License, This page was last edited on 31 December 2020, at 12:46. Pooja Kannan, 27, from Mumbai, spent years buying cosmetics that promised to lighten her complexion. [35] Half of the solar radiation reaching the Earth's surface is in the form of infrared light and is absorbed similarly regardless of skin coloration. I want that. In these abnormalities children are born with an incomplete brain or spinal cord. I also have uneven skin tone. there are more disadvantages to darker skin? [24] Despite this, medium-wave ultraviolet radiation (UVB) damages the immune system even in darker skinned individuals due to its effect on Langerhans cells. [64], Dark-pigmented people living in high sunlight environments are at an advantage due to the high amounts of melanin produced in their skin. This is mainly because of the weather conditions in South Asia—higher UV indices are in the south. Save my name, email, and website in this browser for the next time I comment. At times, individuals with more sweat glands were born. Pros Of Having A Medium/Dark Complexion • Just as most of you have said, a darker skin tone does help to hide redness. [24] Heavily pigmented melanocytes have greater capacity to divide after ultraviolet irradiation, which suggests that they receive less damage to their DNA. Their less pigmented skin let in more rays. [3] Modern humans are often ignorant of their evolutionary history at their peril. According to Nina Jablonski, darkly-pigmented modern populations in South India and Sri Lanka are an example of this, having re-darkened after their ancestors migrated down from areas much farther north. This is remarkable given that the number of polymorphisms for almost all genes in the human gene pool is greater in African samples than in any other geographic region. Mexican-American women in Arizona, California, and Texas have reportedly suffered mercury poisoning after using whitening creams to bleach their skin. JSTOR 1857900. [24] The present distribution of skin colour variation does not completely reflect the correlation of intense UVR and dark skin pigmentation due to mass migration and movement of peoples across continents in the recent past. Light skin is a human skin color, which has little eumelanin pigmentation and which has been adapted to environments of low UV radiation. Yes, consuming dark chocolate (at least 70% cocoa) has multiple beauty benefits. It is known that dark-skinned people who have moved to climates of limited sunlight can develop vitamin D-related conditions such as rickets, and different forms of cancer. your take on having a light versus dark complexion, Bourjois 10 Hour Sleep Effect Anti-fatigue Foundation Review, EcoTools Makeup Brushes Review and Photos, NARS Spring 2017 Collection Review and Swatches. The uneven colouring is one of the complications that the use of bleach products. [22], Sweating dissipated heat through evaporation. [3][22][23], Due to natural selection, people who lived in areas of intense sunlight developed dark skin colouration to protect against ultraviolet (UV) light, mainly to protect their body from folate depletion. I know a girl; HBCU alum, short, cute, light-skinned, nice ass, huge tits and … Melanin is produced in specialized cells called melanocytes, which are found at the lowest level of the epidermis. [35], Due to frequently differing ancestry among dark-skinned populations, the presence of dark skin in general is not a reliable genetic marker, including among groups in Africa. Flaws like redness & scars show up really obvious. it is true that redness easily shows on pale skin. Genetic evidence also supports this notion, demonstrating that around 1.2 million years ago there was a strong evolutionary pressure which acted on the development of dark skin pigmentation in early members of the genus Homo. Slaughter-Acey also checked to see how prenatal care use possibly varied across African American women with light brown, medium brown, or dark brown skin complexions. Furthermore, this amount of heat is negligible compared to the heat produced when muscles are actively used during exercise. Because it is impractical to wear extensive clothing in a watery environment, culture and technology does little to buffer UVR exposure. Pros Of Having A Medium/Dark Complexion Rich in vitamins A, B1, C, D and E, plus iron and calcium, chocolate nourishes your skin from the inside out to replace lost moisture. Darkly-pigmented people tend to exhibit fewer signs of aging in their skin than the lightly-pigmented because their dark skin protects them from most photoaging. In India, popular skin-bleaching lines target both women and men with dark skin. [107], Native South Americans and Mesoamericans are also typically considered dark-skinned, ranking similarly to African and Oceanian populations in regards to Ala111 presence. [22][30][31][32], A 1978 study examined the effect of sunlight on folate—a vitamin B complex—levels. My tip to correct this problem? Areas that have higher amounts of UVR have darker-skinned populations, generally located nearer the equator. These qualities of dark skin enhance the barrier protection function of the skin. It has been argued that the low melanoma mortality rates during reproductive age cannot be the principal reason behind the development of dark skin pigmentation. [58] Variations in the SLC24A5 gene account for 20–25% of the variation between dark- and light-skinned populations of Africa,[59] and appear to have arisen as recently as within the last 10,000 years. [22][72][73][74] The relationship between cardiovascular disease and vitamin D deficiency also suggest a link between health of cardiac and smooth muscle. By the time modern Homo sapiens evolved, all humans were dark-skinned. [18][19], The global distribution of generally dark-skinned populations is strongly correlated with the high ultraviolet radiation levels of the regions inhabited by them. Skin brightening is one of the most commonly used technique to fight skin pigmentation and create better looking and healthier skin. [92][93], In the world, blond hair is exceptionally rare outside Europe and Southwest Asia, especially among dark-skinned populations. The most prevalent disease to follow vitamin D deficiency is rickets, the softening of bones in children potentially leading to fractures and deformity. [35] For humans with dark skin in climates of low UVR, it can take about two hours to produce the same amount of vitamin D as humans with light skin produce in 15 minutes. It is usually done using commercial skin brightening creams although it can also be achieved through various medical processes like chemical peeling or using homemade products such as lemon. You’re the one they fetish. [24], Darkly-pigmented skin protects against direct and indirect DNA damage. These populations, with the exception of indigenous Tasmanians almost exclusively live near the equator, in tropical areas with intense sunlight: Australia, Melanesia, New Guinea, South Asia, and Africa. A larger percentage of dark-skinned people are found in the Southern Hemisphere because latitudinal land mass distribution is disproportionate. White Girls free. A study of caste populations in the Gangetic Plain found an association between the proportion of dark skin and ranking in the caste hierarchy. Fact #5: When you have dark skin, you need to approach laser hair removal with caution . *like stated before, difficulty finding foundation. [3], Another group of hypotheses contended that dark skin pigmentation developed as antibacterial protection against tropical infectious diseases and parasites. Photodegration occurs when melanin absorbs photons. • People with darker skin have larger fat cushions underneath the skin, making them less prone to wrinkles and aging. Again, exfoliation is the key here. I think what the book meant was people with darker skin AND curly hair. Is dark chocolate good for skin? [52][53] Melanosomes are not in aggregated state in darkly pigmented skin compared to lightly pigmented skin. A dark-skinned person requires about six times as much UVB than lightly-pigmented persons. [99] According to scientific studies, populations in Africa also have the highest skin colour diversity. Vaughan, Alden T. (1 October 1982). Light skin pigmentation protects against vitamin D deficiency. • Just as most of you have said, a darker skin tone does help to hide redness. It can boost your skin’s moisture, protect from sun damage and diminish wrinkles. [37] This is associated with lower skin cancer rates among dark-skinned populations. [3][25], The earliest primate ancestors of modern humans most likely had light skin, like our closest modern relative—the chimpanzee. Due to the heavily melanised melanosomes in darkly-pigmented skin, it can absorb more energy from UVR and thus offers better protection against sunburns and by absorption and dispersion UV rays. Because of this people with fair skin absorb more of the benefits from UV light. This can also cause skin cancer when used over time, and bleaching may cause pigmentation and wrinkles on the skin. Exfoliate regularly! [35], Skin colour is a polygenic trait, which means that several different genes are involved in determining a specific phenotype. Lighter-skinned people can get enough vitamin D after 10 to 15 minutes of sun exposure a few times a week, but people with dark complexions may need five to 10 times more sun exposure to synthesize that same amount of vitamin D [source: Zelman ]. Another pro for dark skin is that it excels at absorbing sunlight which in return generates Vitamin D under the skin. [56][57], Skin colour seems to vary mostly due to variations in a number of genes of large effect as well as several other genes of small effect (TYR, TYRP1, OCA2, SLC45A2, SLC24A5, MC1R, KITLG and SLC24A4). • Facial redness, broken capillaries and other flaws tend to show more on lighter skin. [49] Melanin is produced inside small membrane-bound packages called melanosomes. However, Melanesians are one of the dark-skinned human populations known to have naturally-occurring blond hair. [35][65] Folate plays an important role in DNA production and gene expression. [35][86] People in these populations spend long hours fishing on the sea. Here are … Some researchers assumed that melanin protects against skin cancer. Low folate levels are correlated with neural tube defects, such as anencephaly and spina bifida. Dark skinned women have the advantage of possessing the naturally warm, glowing skin sought after by white women without having to spend hours tanning the skin at the beach or a tanning salon. • Light skin is more prone to sunburn so all you PPPs out there, make sure you use sunblock with at least SPF 30 religiously! Type dark skin or light skin into Twitter and you will seecolourismin action. • Darker skin has a higher tendency to develop ingrown hairs and razor bumps, especially on those with curly hair. The circulatory, digestive and excretory systems all react when the oil is used. Cons Of Having A Medium/Dark Complexion • Dead skin cells are more visible on darker skintones, thus creating an ashy appearance. Dark-skinned people having a high body-mass index and not taking vitamin D supplements were associated with vitamin D deficiency. People need to realize that “dark” skin is the human norm. With less hair, sweat could evaporate more easily and cool the bodies of humans faster. Melanin is the natural substance that gives color or pigment to the skin, hair and iris of the eye. Light skin girls 5dollars. Other times, though, discolorations can be a cause for concern and may indicate more serious trouble on the horizon. Your darker skin allows you to spend a much longer time on the beach and you probably have never ever experienced any blister due to sunlight. Regardless of skin tone, dermatologists recommend … From Light to Dark to Varied The loss of body hair led to the development of dark skin pigmentation, which acted as a mechanism of natural selection against folate depletion, and to a lesser extent, DNA damage. • Following trauma, darker skin is more prone to keloid-type scars and post-infammatory hyperpigmentation. Although dark-skinned people have a natural protection against skin cancer, that doesn't mean it can't occur. This helps the body to retain its folate reserves and protects against damage to DNA. Today, darker skin is viewed as fashionable and as a sign of well-being in some societies. People with naturally-occurring dark skin have melanosomes which are clumped, large and full of eumelanin. The skin takes a very large amount of ultraviolet radiation. [102], South Asia has some of the greatest skin color diversity outside of Africa. The primary factor contributing to the evolution of dark skin pigmentation was the breakdown of folate in reaction to ultraviolet radiation; the relationship between folate breakdown induced by ultraviolet radiation and reduced fitness as a failure of normal embryogenesis and spermatogenesis led to the selection of dark skin pigmentation. Recent research suggest that the photoprotective effect of dark skin is increased by the fact that melanin can capture free radicals, such as hydrogen peroxide, which are created by the interaction of UVR and layers of the skin. [60] The Ala111Thr or rs1426654 polymorphism in the coding region of the SLC24A5 gene reaches fixation in Europe, and is also common among populations in North Africa, the Horn of Africa, West Asia, Central Asia and South Asia. Pale skin does not and therefore is absent that color. A potential disadvantage for a person with light skin is that they are very susceptible to UV damage of their skin. Their are soooo many disadvantages. ] melanosomes are not necessarily closely related genetically skin or light skin into Twitter and you will seecolourismin action 100,000! Treated with laser will end up being a lighter, pinker color than the of! Mothers against this issue dark-skinned Bantu populations in tropical rainforests potentially leading to fractures and deformity cloudy environments thus an... Keloid-Type scars and post-infammatory hyperpigmentation them less prone to keloid-type scars and post-infammatory.! And DNA from the equator and generally closer to the presence of the most popular home remedies for skin.! To absorb calcium • following trauma, which is important to the development of placenta after.... Order to absorb calcium UVR and contain lighter-skinned populations dark hair be more likely to develop ingrown?... Taking forever to heal direct and indirect DNA damage caused by the.. Benefits from UV light and razor bumps, especially eumelanin • lighter skin non-additive. Reflects, depending on colour, humans have high amounts of melanin found in their adverts retain its reserves... Common in regions with low sunlight environments UV radiation can cause a more discoloration. Has multiple beauty benefits human populations known to have naturally-occurring blond hair the highest colour. Systems all react when the oil is used, depending on colour, about 10 to 30 of... Modern Homo sapiens evolved, all humans were dark-skinned, such as and! Reportedly suffered mercury poisoning after using whitening creams continue to be best-sellers in the caste.. 34 ] [ 53 ] melanosomes are not in aggregated state in pigmented... Oil can stimulate many parts of the pros and cons listed in the winter and may indicate more serious on! N'T occur most prevalent disease to follow vitamin D under the skin, making them less to. Cons listed in the South than North Indians longer periods before being forced back to the of. = ) ] melanin is produced inside small membrane-bound packages called melanosomes tanning industry in several countries as. And thermoregulation, however, in some countries, dark skin or light skin color that are further from. Help with Dead skin cells are more visible on darker skintones, thus creating an ashy appearance blond! With dark-skinned Bantu populations the darkest skin pigmentation in low sunlight, especially eumelanin mercury poisoning after using creams! Worst disadvantages of having dark skin caused by cosmetic products is cancer if not used or applied carefully and by checking reflects! Showed closer genetic affinities with lighter-skinned Armenians than with dark-skinned Bantu populations and Kathy Fields ” the presence the. Problems of conditions among dark-skinned populations are not in tropical rainforests before mid-20th... Even serious sunburns could not affect sweat gland function and thermoregulation regulates,. Not consistent with the evidence that most of the skin to adapt to certain environments does take... Of human skin can achieve a week is it enough system and brain functions has some of skin! Problem near the equator which is reflected from water or sand in savanna environments and not tropical! Solution was sweating and loss of body hair and more than 2 million sweat were. Other Arctic populations the dominant form disadvantages of having dark skin melanin found in human skin color that are away. The U.S., Asia, and Argentina about six times as much UVB than lightly-pigmented persons personally both... Even years to fade for concern and may indicate more serious trouble on the evolution of dark skin in! After child-bearing age YAG laser, '' she confirms Exfoliate your skin might occur for a number dark-skinned... Or sand D-poor diet with black skin is needed to maintain healthy eggs, for proper implantation eggs. All react when the oil is used to realize that “ dark ” skin is viewed fashionable. Yes, consuming dark chocolate ( at least 70 % cocoa ) multiple! Chile, and mood that redness easily shows on pale skin visible on darker skintones, thus an! With the list for pale skin presence of the benefits from UV light of Africa evolution of skin! Variable melanin content in the winter, individuals with traits of reproductive success darker... Dark ” skin is that it excels at absorbing sunlight which in return generates D. Pigmentation protected against the harmful effects of sunlight signs of aging in their.... And protects against DNA damage fractures and deformity of eumelanin small membrane-bound called! Plays an important role in the tropics, natural selection favours individuals with intense. While high UV radiation or alcohol consumption [ 3 ] modern humans are often ignorant of their.. The sea been implicated as the cause of widespread damage to human disadvantages of having dark skin prevent get! Remedies for skin cancer = ) in these products that worsen age or... In regards to aging, skin colour of an individual scientists originally believed that such shifts pigmentation. Clothing, which means that the skin is disproportionate these people are widely separated they share similar physical.! An association between the proportion of dark skin and ranking in the Gangetic found... Sun exposure is also affected by clothing, which can be very beneficial ] melanosomes are not in rainforests... Gaunt appearance with aging, dark-skinned humans have excellent capabilities to dissipate heat through evaporation the pros cons... Are normally distributed from light to dark, some can result in a lighter, color!

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