Researchers can predict your chronological age from the microbes found on your skin, in your mouth, or in your poo.

People who exercise more are less likely to have dementia, but there's not good evidence of cause and effect — we need more studies in t

Margaret — who just turned 86 — has the brain health and cognitive function of someone 20 years her junior and shows no sign of dementia.

Slowing the ageing process starts with better understanding your cells.