Sleep Special – with Prof Russell Foster
In this special edition of Just One Thing, Dr Michael Mosley interviews Professor Russell Foster, Director of the Sleep and Circadian Neuroscience Institute at the University of Oxford and one of the world’s leading experts on body clocks. In this concise, practical episode, Foster explains how circadian rhythms work, how much sleep we truly need, […]
True Vitality Test – The Blue Zones
The True Vitality Test is a quick, science‑based assessment developed by Blue Zones to estimate your life expectancy and the number of healthy years you’re likely to enjoy. In just three minutes, it analyses lifestyle patterns across movement, nutrition, sleep, social connection, and purpose. At the end, users receive personalised recommendations designed to increase both […]
How Light Regulates the Body Clock
Professor Russell Foster’s research has transformed our understanding of how light shapes human biology. His work identifies a third photoreceptor system in the eye — melanopsin‑containing retinal ganglion cells — that detects blue‑enriched light (~480 nm) and sends powerful signals to the brain’s circadian clock. This system regulates melatonin release, sleep timing, alertness, mood, and […]