By Vijay Kumar Malesu Reviewed by Susha Cheriyedath, M.Sc. May 29 2026 A sweeping study across four mammalian species shows that aging leaves a shared molecular fingerprint, opening new ways to measure biological decline, compare interventions and uncover pathways that may shape healthier lifespans. Study: Universal transcriptomic hallmarks of mammalian ageing and mortality . Image Credit: Igor Kyrlytsya / Shutterstock In a recent study published in the journal Nature , an international team of