Evolution[ edit ] Half European, half Japanese girl with light skin. An abundance of clinical and epidemiological evidence supports that light skin pigmentation developed due to the importance of maintaining vitamin D3 production in the skin. This accounts for the development of dark skin pigmentation of people living near the equator but does not account for the increasingly lighter-skinned people living outside the tropics. The overwhelming positive effect of UV radiation in land-living vertebrates is the ability to synthesize vitamin D3 from it. A certain amount of vitamin D which penetrates the skin helps the body to absorb more calcium which is essential for building and maintaining bones, especially for developing embryos. Vitamin D production depends on exposure to sunlight.
Ask a Very Smart Brotha: Let me start off by telling you a little about myself. I am medium height, light skinned with long good hair and light eyes and I have big legs, hips and butt. So I met this woman at the gym and we started hanging out and she is cool.