Han-Chow Koh, PhD, and Frank A.J.L. Scheer, PhD, of the Medical Chronobiology Program at the Division of Sleep and Circadian Medicine in the Mass General Brigham Department of Medicine, are the co-lead and senior author, respectively, of a paper published in Metabolism, “Constant-routine protocol reveals an endogenous circadian rhythm in diet-induced thermogenesis with a peak in the biological morning.”

A plant- and fish-based, low-protein diet paired with small amounts of an amino acid commonly found in eggs, meat and dairy increased healthy lifespan and decreased frailty and fat mass in mice, according to a new USC study published June 23, 2026 in the journal Cell Metabolism.