New Hair-Based Test Offers Insight into Body's Internal Clock
Researchers at Charité – Universitätsmedizin Berlin have developed a novel method to determine a person's internal clock using hair samples. This test identifies an individual's chronotype by analyzing the activity of 17 genes in hair follicles, providing insights into their natural daily rhythm. The study, involving around 4,000 participants, found that biological timing is influenced by lifestyle, age, and gender. The results, published in PNAS, suggest that this method could advance circadian medicine by aligning medical treatments with the body's natural rhythms. 
