Neutrons show a connection between lithium concentrations in the brain and depression

Depressive disorders are among the most frequent illnesses worldwide. The causes are complex and to date only partially understood. The trace element lithium appears to play a role. The distribution of lithium in the brains of depressive people is different from the distribution found in healthy humans.

source https://www.sciencedaily.com/releases/2021/05/210521115308.htm