概括地說，雄激素助長蛋白質的合成及擁有雄激素受體的組織的生長，睪酮的效用可以分為合成代謝及雄性化效應。合成代謝效應包括肌肉質量及力量的增長、增加骨質密度及強度、刺激線性生長及骨骼成熟等。雄性化效應則包括性器官的成熟（尤其是陰莖及胎兒陰囊的生成）、出生後（通常是在青春期）聲線的轉沉、鬍鬚及體毛的生長等。這些效應一般都是男性的第二性徵。

When managing for the consequences of perception in possessing acquired testosterone, Gals who have acquired testosterone make fairer features than Girls who've not obtained testosterone.[130]

The rise in testosterone all through Competitiveness predicted aggression in males, but not in females.[115] Subjects who interacted with handguns and an experimental sport confirmed increase in testosterone and aggression.[116] Pure range might have progressed males to be much more delicate to aggressive and status challenge situations, and that the interacting roles of testosterone would be the essential component for aggressive conduct in these predicaments.

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It’s not likely — and tough to notify — that an Grownup assigned male at start has better-than-typical levels of testosterone.

Purely natural testosterone can be a steroid — an anabolic-androgenic steroid. "Anabolic" refers to muscle mass building, and "androgenic" refers to improved male intercourse characteristics.

testosterone, hormone made by the male testis that is certainly accountable for progress in the male intercourse organs and masculine traits, which include facial hair and deepening on the voice. Testosterone was isolated from testicular extracts in 1935.

In humans, testosterone appears much more to advertise position-looking for and social dominance than basically expanding Actual physical aggression.

Nonetheless, if you hear people today make use of the time period “anabolic steroids” they are usually referring to synthetic (made in the lab) variations of testosterone which have been injected into One's body.

Testosterone can also basically exaggerate or amplify present aggression; for instance, chimpanzees who get testosterone boosts grow to be extra intense to chimps decrease than them during the social hierarchy, but will Seen on TV still be submissive to chimps better than them. Testosterone thus won't make the chimpanzee indiscriminately aggressive, but as an alternative amplifies his pre-current aggression to reduce-rated chimps.[129]

由于睾酮能提升体能，一些运动员为保持体育状态或表现，会于赛前使用睾酮。男运动员在赛前数小时，可以将睾酮注射阴囊内，激化身体的状态。但现时大部分的体育项目都已把睾酮定为禁药。

除自然作用之外，雄性激素亦可作为药物使用，如雄激素替代疗法和促进肌肉生长。值得注意的是，成年男性無論施打多少劑量的雄激素都无助生殖器再次發育成長，反而容易增长生殖疾病风险。

Dihydrotestosterone is to blame for sperm maturation through spermatogenesis, with the formation from the prostate gland and exterior genitalia, and for sexual maturation at puberty.

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