Seven years of investigation by scientists at Harvard Medical School have revealed that the loss of the metal lithium plays a powerful role in Alzheimer’s disease, a finding that could lead to earlier detection, new treatments and a broader understanding of how the brain ages.

Researchers led by Bruce A. Yankner, professor of genetics and neurology at Harvard Medical School, reported that they were able to reverse the disease in mice and restore brain function with small amounts of the compound lithium orotate, enough to mimic the metal’s natural level in the brain. Their study appeared Wednesday in the journal Nature.

“The obvious impact is that because lithium orotate is dirt cheap, hopefully we will get rigorous, randomized trials testing this very, very quickly,” said Matt Kaeberlein

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