Studies have offered plenty of science-backed ways to help prevent Alzheimer’s disease, from following the MIND diet to taking weight-loss drugs like Ozempic. But there is practically nothing we can do to reverse the disorder once it’s already begun affecting the brain.

That’s why new research from scientists at Harvard Medical School (HMS) is so groundbreaking and exciting. In a study published this week in the journal Nature, they share that taking lithium could be an accessible and quick way to restore brain function in those suffering from Alzheimer’s.

What is lithium?

Lithium is a metal, the lightest on the periodic table. “Found in extremely low concentrations in rocks and seawater, lithium enters the human body through foods such as cereals, cabbage, and tomatoes, or through drin

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