Excerpt:
"A major new study this month suggests for the first time, finally, what might be a causal link between a deficiency in lithium and Alzheimer’s. https://hms.harvard.edu/news/could-li...
A few weeks ago, they released a big paper in Nature.
They had analyzed brain tissue from people who had died, and found that lithium levels declined dramatically in people with mild cognitive decline, in other words, in the earliest stages, before Alzheimer’s was diagnosed. When they deprived mice of lithium, the mice showed accelerated brain pathology and their memory declined. But when they fed deprived mice lithium, they were able to restore their memory."