[Kay]

I have read that boron can increase testosterone.

Quote "After only 1 week of boron supplementation of 6 mg/d, a further study by Naghii et al20
of healthy males (n = 8) found (1) a significant increase in free
testosterone, which rose from an average of 11.83 pg/mL to 15.18 pg/mL;
and (2) significant decreases in E₂, which dropped from 42.33 pg/mL to 25.81 pg/mL."

source: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4712861/