Weill Cornell Medicine Mar 14 2025 A person's "bioenergetic age"-or how youthfully their cells generate energy-might be a key indicator of whether they're at risk of developing Alzheimer's disease, new research from Weill Cornell Medicine shows. The study, published Feb. 24 in Nature Communications , suggests healthy living can turn back the bioenergetic clock for some people, helping them fend off Alzheimer's as effectively as a new drug called lecanemab. "That's quite big because it means