Lithium

Lithium in Scalp Hair of Adults, Students, and Violent Criminals –  Effects of Supplementation and Evidence for Interactions of Lithium with Vitamin B12 and with Other Trace Elements

https://pubmed.ncbi.nlm.nih.gov/1381936/

Sulfur

The essentiality of sulfur is closely related to nitrogen metabolism: a clue to hyperhomocysteinaemia

https://pubmed.ncbi.nlm.nih.gov/19079922/