Stearic Acid

Activiation of testosterone by palmitic and stearic acids
http://www.jbc.org/content/122/2/297.full.pdf
Old paper, but interesting.

Stearic acid has no effect on 5AR
https://www.ncbi.nlm.nih.gov/pubmed/12477490

Again, no effect on 5AR
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1132824/?page=3

Although maybe it does (a bit) and might promote hair growth
https://www.ncbi.nlm.nih.gov/pubmed/10830511
- Although inhibition is still less than all other fatty acids studied other than palmitic.