Do men have a well-defined jawline because of testosterone?

Yes, testosterone plays a role in the development of a well-defined jawline in men. Testosterone is a hormone that is responsible for the development of male secondary sexual characteristics, including increased muscle mass, facial hair growth, and changes in bone structure. Higher levels of testosterone can lead to a more prominent jawline and a more angular facial structure in men.

Yes, elevated testosterone levels are associated with a more defined jawline in men.