Nah, lithium is only treating something that is occurring much deeper: low glucose transport in the brain.

https://pmc.ncbi.nlm.nih.gov/articles/PMC8772148/

This is why APoE e4 alleles are a risk factor, because they control glucose transport.

https://www.nature.com/articles/s41398-025-03550-w

The brain is just losing energy.