Many commercial biological age tests collect genetic information through saliva samples or oral swabs. For accurate measurements, however, blood samples are typically necessary according to a new ...

Body weight and body mass index alone are not enough to predict whether someone will develop a metabolic disease. A new atlas of cells in fat tissue could help to explain why some overweight people ...

People's bodies can be old or young for their chronological age, depending, in part, on the amount and types of stressors ...