Environmental factors such as lifestyle and the medications you take influence the effects your genes have on your body — and can clarify how diseases develop. When you purchase through links on our ...

Are we born or made this way? Short answer: It's both. Reviewed by David Susman, PhD Are we born with our personality characteristics, or do we become who we are because of the world around us? The ...

Identical and fraternal twins can provide insight into the effects of nature and nurture on factors such as eye color, intelligence, and autism. The environment can sometimes "override" genetic ...