USA Today Can dark skin be a health hazard? It
might be if you are a dark-skinned person who lives far from the
equator, gets little sun exposure and consumes little vitamin D.
That describes many African Americans and helps explain why studies
find that average African-American children and adults have much lower
blood levels of the vitamin than white Americans do. Vitamin D is
produced in response to sun exposure in a process that works most
efficiently in pale skin. It's also in fortified dairy products and
fatty fish, but few Americans of any skin color consume enough of
those foods to meet recommendations... Read More