Testosterone in the Wild: What Can Amazonian Tribesmen Tell Us about Masculinity in America?

How much verified proof exists for this claim

Single weak corroboration

How intriguing or unexplained this claim is

The claim involves an active investigation into differing testosterone patterns between Amazonian tribesmen and men in the Developed World, with potential implications for understanding masculinity. The presence of multiple competing theories and notable unknowns about the biological and cultural factors contributes to its intrigue.