In a major new finding almost a decade in the making, researchers at Harvard Medical School say they’ve found a key that may unlock many of the mysteries of Alzheimer’s disease and brain aging — the humble metal lithium.

FRIDAY, Aug. 8, 2025 (HealthDay News) — Tiny amounts of lithium — a natural metal — may help protect the brain from Alzheimer’s and signs of aging, new research shows. Scientists at Harvard Medical School and Rush University found that when mice were fed a low-lithium diet, their brains developed more inflammation and signs of aging accelerated.

CHENNAI: A new study published in Nature suggests that low levels of lithium in the brain may play an important role in the development of Alzheimer’s disease and that carefully restoring lithium could help prevent or even reverse memory problems,