University of Edinburgh Jun 30 2026 Reviewed Scientists have discovered a rare genetic condition which causes people to age at a much faster rate, offering fresh insights into the aging process.  The study shows for the first time how a 'biological clock' present in every cell of the body could contribute to age-related diseases.  Experts say the findings could support the design of future medicines to counter diseases linked to older age, as life expectancies continue to rise across the globe.