Does this mean all those Chinese buyers of poached rhinoceros horns for supposed virility are actually getting something if there's testosterone in there?
Rhino horns are modified hair and mammoth tusks are modified teeth so they are very different. But maybe there can be some testosterone in the rhino horns idk.
EDIT: It seems you are right, there is some testosterone in hair (https://link.springer.com/article/10.1007/s002160050330) so probably there can be some amount in rhino horns. I don't know if eating it would have medical effects, for example maybe there's not enough or maybe it's not in the right form or maybe eating it doesn't work.
Probably not unless it was an incredibly high dose due to bio-availability [1] assuming you meant by eating it. There are ways to by-pass the first pass effect [2].
You know, sometimes I get mad at Chinese food fetishes killing off a species or another, then I remember American car fetish is destroying the human habitat...
