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Novo Nordisk and Eli Lilly report that GLP-1 weight-loss drugs such as semaglutide reduce molecular aging-clock markers by roughly two to four years, suggesting these medications may act as geroprotectors that slow biological aging.
A six-month contest called Younger, founded by neuroscientist Christin Glorioso of NeuroAge Therapeutics, pits around 500 participants against each other to reverse their biological age as measured by a variety of aging clocks, aiming to build the world's most comprehensive biological age dataset.