Health Scientists Can Now Read Body Clocks From a Single Hair by Dr Natalie Singh - Health Editor April 12, 2026 by Dr Natalie Singh - Health Editor April 12, 2026 Unlocking the Body Clock: How a Single Hair Could Revolutionize Personalized Medicine Your internal clock does far more than regulate when you feel sleepy or groggy after a long flight. … 0 FacebookTwitterPinterestEmail