So you're saying darker skin prevents the body from producing vitamin D? (Not saying it doesn't, I just didn't know.) Also, what does lactose (in-)tolerance ha

So you're saying darker skin prevents the body from producing vitamin D? (Not saying it doesn't, I just didn't know.) Also, what does lactose (in-)tolerance have to do with… anything? To my knowledge, the fact that lactose tolerance is that common among Europeans is largely a result of thousands of years of domesticating dairy animals. Not all light-skinned people in the world are automatically lactose-tolerant (or "are more likely to have genetics allowing for lactose tolerance throughout life" as you say). Wikipedia agrees: > Lactase persistence evolved in several populations independently, probably as an adaptation to the domestication of dairy animals around 10,000 years ago. Today the prevalence of lactose tolerance varies widely between regions and ethnic groups. The ability to digest lactose is most common in people of European descent, and to a lesser extent in some parts of the Middle East and Africa. https://en.m.wikipedia.org/wiki/Lactose_intolerance https://en.m.wikipedia.org/wiki/Lactose_intolerance Also see the map on https://en.m.wikipedia.org/wiki/Lactase_persistence https://en.m.wikipedia.org/wiki/Lactase_persistence .