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First modern Britons had 'dark to black' skin
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[QUOTE]Originally posted by Djehuti: [QB] [QUOTE]Originally posted by Thereal: [qb] @djhuti you do realize the higher up you go in elevation the sun's effects becomes readily appearent so white skin would have no benefit. [/qb][/QUOTE]Yes, I know this. But the issue here is not altitude but [i]latitude[/i]. Melanin is a pigment used to block excess UV rays since such can damage living skin cells. However the skin needs some adequate exposure to UV in order to produce vitamin D which is an essential nutrient for healthy bone growth and development. The lower in latitude i.e. the closer one gets to the equator the more UV ray exposure. Thus equatorial populations aboriginal to an area with maybe the exception of the Americas are very black. The higher in latitude i.e. the farther you are away from the equator the less UV ray exposure. So Europeans especially those of northern areas are pale in complexion and the same is true of northeast Asians because the UV rays are weak in these areas melanin becomes a liability. Certain North Asian populations like the Eskimo are an exception to this rule in that they have relatively dark skins even though they live in polar regions, the reason being that they traditionally lived off vitamin D rich diets of fish meat and marine mammal blubber. This is why dark skinned and especially black people who move to Northern Europe must supplement vitamin D into their diets especially growing children or else they will suffer vitamin D deficiency disorders such as rickets. On the flip side when whites move to equatorial regions they have to use sunscreen or else suffer the consequences of UV skin damage which leads to skin cancer. [IMG]http://picturestack.com/606/830/86pPicture1MSD.png[/IMG] ^^ However, even if European skin became pale relatively recently, the change couldn't have been from the Nigerian-like complexion of Cheddar Man reconstruction to palor all of sudden. That is why I'm saying Late Paleolithic Europeans probably were dark but not [i]that[/i] dark! [/QB][/QUOTE]
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