From gait speed and DNA methylation to AI scans and clinical text, a major review maps how scientists are measuring aging, and why the field still needs stronger evidence before these tools guide ...

New research links childhood adversity to mitochondrial bioenergetic changes later in life, underscoring the impact of stress in early life on cellular health. The study also found that different ...

Biological evolution is the heritable change in characteristics of biological populations over successive generations, driven by mechanisms such as mutation, recombination, genetic drift, gene flow, ...