Leibniz Research Centre For Working Environment And Human Factors

This study checked whether the time of day changes a person's 'immune age' — a score that shows how well the immune system is working. Researchers took blood from 50 healthy adults (ages 20-69) at 8 a.m., 1 p.m., and 6 p.m. on the same day. The goal was to see if the immune age s…