https://bmcpsychiatry.biomedcentral.com/articles/10.1186/s12888-018-1685-z

Fascinating article in reputable journal arguing for mineral deficiencies as a way to understand and treat depression.
Might mean reconsidering supplementation studies.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3804335/

Another article (of several) looking at psychiatric illness and micronutrients. Seems plausible, safe, and well tolerated. This study was with children.
Still I need to be clear that these results SHOULD NOT replace use of psychiatric medications. There is scant evidence they work alone.