Coloured skin

mynameisgone · 23 Aug 2005, 10:28 PM

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ive heard that there is a balnce between skin colour and a vitamin (D or K) produced by the interaction between sunlight and the skin. if they live in a place with a lot of intense sunlight (Africa) they suffer sunburn and couldn't function properly. however the draker pigment prevents the chemical reaction that forms said vitamin. this vitamin produces strong bones and physique, therefore a lighter skinner person would have the advantage in an environment where there is less intense sunlight and feircer competition, i.e. Europe. Also the Aboriginies are thought to have migrated well after skin colours had beeb set into regions, and the middle east and meditereanean have had strong interactions with Europe.

Just a theory....

silvermoon · 24 Aug 2005, 11:37 AM

whilst it is true that vitD can be obtained from fish and milk these are not the only available sources. you might want to research the relationship between vitamin D and vitamin A, especially in regard to skin pigmentation

Cab31 · 31 Aug 2005, 1:43 PM

Skin pigmentation is all due to melanin. In fact nearly all pigmentation in the body is due to this - including your eye colour!

Skin pigmentation does not greatly affect the amount of vitamin D produced however.

Lighter skinned ppl have a disadvantage because their skin is damaged faster in sunlight.

Jase · 31 Aug 2005, 11:40 PM

Well, papua new guineans probably migrated from regions closer to the equator (which gets alot of sun, so adaptations for higher melanin arise), despite the fact that it is indeed on the equator. Libyans might have ancestry closer to northerners, where melanin-adaptation isn't quite as high, which means skin isn't dark.

Sentinal · 6 Apr 2009, 7:02 PM

all to do with vitamin d

sinophile · 18 May 2009, 9:48 PM

This thread is full of idiots.

24 Aug 2005, 11:37 AM	#17 (permalink)
silvermoon caffeine fiend HSC: 2004 Gender: Female Location: getting the blood out of my caffeine system Join Date: Mar 2004 Posts: 1,846 Last Activity: 23 Dec 2008, 10:42 PM	whilst it is true that vitD can be obtained from fish and milk these are not the only available sources. you might want to research the relationship between vitamin D and vitamin A, especially in regard to skin pigmentation __________________ A small, fluffy rabbit named Brutus will always have that extra edge to it – a hint of being a wolf in sheep’s clothing, when it is really too much of a vegetarian to be a wolf, and too much of a rabbit to be a sheep. Newcastle tutor: 7-12 English, Maths, Ancient History B Arts/Law University of Newcastle

31 Aug 2005, 11:40 PM	#19 (permalink)
Jase Executive Member HSC: 2004 Gender: Male Location: Behind You Join Date: Mar 2004 Posts: 726 Last Activity: 30 Oct 2009, 1:14 AM	Well, papua new guineans probably migrated from regions closer to the equator (which gets alot of sun, so adaptations for higher melanin arise), despite the fact that it is indeed on the equator. Libyans might have ancestry closer to northerners, where melanin-adaptation isn't quite as high, which means skin isn't dark. __________________ It takes a big man to cry. It takes a bigger man to laugh at that man.

6 Apr 2009, 7:02 PM	#20 (permalink)
Sentinal Junior Member HSC: 2009 Gender: Male Join Date: Mar 2009 Posts: 28 Last Activity: 12 Nov 2009, 6:24 AM	Re: Coloured skin all to do with vitamin d

18 May 2009, 9:48 PM	#21 (permalink)
sinophile Senior Member HSC: 2009 Gender: Undisclosed Location: supporting pylon hole driller Join Date: Oct 2008 Posts: 374 Last Activity: Today, 1:14 AM Blog Entries: 5	Re: Coloured skin This thread is full of idiots. __________________

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23 Aug 2005, 10:28 PM	#16 (permalink)
mynameisgone Junior Member Join Date: Jul 2005 Posts: 33 Last Activity: 3 Jan 2006, 11:03 PM	You can hide this advertisement by registering. ive heard that there is a balnce between skin colour and a vitamin (D or K) produced by the interaction between sunlight and the skin. if they live in a place with a lot of intense sunlight (Africa) they suffer sunburn and couldn't function properly. however the draker pigment prevents the chemical reaction that forms said vitamin. this vitamin produces strong bones and physique, therefore a lighter skinner person would have the advantage in an environment where there is less intense sunlight and feircer competition, i.e. Europe. Also the Aboriginies are thought to have migrated well after skin colours had beeb set into regions, and the middle east and meditereanean have had strong interactions with Europe. Just a theory....

31 Aug 2005, 1:43 PM	#18 (permalink)
Cab31 Executive Member HSC: 2004 Gender: Female Location: Brisbane Join Date: Mar 2004 Posts: 512 Last Activity: 27 Oct 2009, 5:59 PM	Skin pigmentation is all due to melanin. In fact nearly all pigmentation in the body is due to this - including your eye colour! Skin pigmentation does not greatly affect the amount of vitamin D produced however. Lighter skinned ppl have a disadvantage because their skin is damaged faster in sunlight.

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