University of California, Berkeley, scientists have found an important reason (besides finding disease genes) to delve into your genetic heritage: to find the slight genetic flaws that can be fixed with remedies as simple as vitamin or mineral supplements.

They found there are many genetic differences that make people’s enzymes less efficient than normal, and that simple supplementation with vitamins can often restore some of these deficient enzymes to full working order. They also found there is a lot of variation in the population in enzymes.