Why do some adults remain active and strong with age, while others quickly lose strength and mobility? It may depend on genetic variations in the mitochondrial enzyme ALDH4A1.

Researchers use short-term Yamanaka factor cellular reprogramming to partially regenerate liver cells to a more youthful state, healing damaged liver tissue at faster rates than previously known.

Oleic acid (a fatty acid found in olive oil) binds to a 'master regulator' of neurogenesis, which increases hippocampal neuron growth in mice.

Researchers partly restore the function of older skin cells, rejuvenating molecular markers of biological age. The cells not only appeared younger, but functioned like young cells as well.