New research explains the role of genes and other health factors.

GLP-1 weight loss drugs have quickly moved from medical journals to household conversations, reshaping how Americans think about obesity, diabetes and weight loss. Headlines often describe them as ...

Genetic inheritance may sound straightforward: One gene causes one trait or a specific illness. When doctors use genetics, it’s usually to try to identify a disease-causing gene to help guide ...

Nature and nurture both determine how likely you are to develop a particular disease. Hiroshi Watanabe/DigitalVision via Getty Images Sitting in my doctor’s examination room, I was surprised when she ...

For years, health experts have been telling Americans to make lifestyle changes to live longer, healthier lives. But how much of an effect do such changes - improving diet, getting more exercise, ...

An individual's genetic makeup could influence the effectiveness of weight-loss injections, a new study suggests. Researchers discovered that specific gene variants can predict both the degree of ...

Smithsonian researcher Sarah Johnson studies bison specimens to understand how the species’s genetic diversity changed after its decline Ashley D'Souza Postdoctoral researcher Sarah Johnson stands ...