New research reveals that lithium helps protect against neurodegeneration and Alzheimer's disease by preventing toxic amyloid plaques from disrupting brain function.

A Harvard study suggests lithium loss may be linked to Alzheimer's, offering hope for early detection and new treatments, though experts urge caution.

Scientists at Harvard say they may have found a key cause of Alzheimer’s disease — too little lithium in the brain. The new study shows that lithium, a natural chemical in our brains, protects memory.