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。

层次（鞘膜 · 白膜 · 血管膜） · 附件 · 纵隔 · 小叶 · 隔片 · 莱迪希细胞 · 塞尔托利氏细胞 · 血睾屏障

与其他类固醇激素一样，睾酮是由胆固醇所衍生的。男性睾丸可以产生大量睾酮，女性卵巢、胎盘及男性或女性的肾上腺网状带亦会分泌少量的睾酮。

睾酮是经由血液中的性激素结合球蛋白运送至身体的目标组织。男性生殖腺内的塞尔托利氏细胞需要睾酮来生成精子。

维持性欲及勃起次数（滥用补充剂可能会导致疼痛性阴茎异常勃起、和性欲亢进）

AIS is actually a condition of sexual intercourse differentiation. It affects male fetuses as they establish from the uterus, along with teenage sexual development all through puberty.

提神及提升体能（对照睾酮缺乏患者体能较佳，但与正常人无异，刻意补充对体能不会有显著的增加）

虽然雄性激素常被认为仅是男性的性激素，但女性亦会产生雄性激素，只是数量较低，负责性欲与性唤起。雄性激素也是男女体内雌性激素的前体。

精囊 · 精腺排泄管 · 攝護腺（尿道嵴／精阜／攝護腺小囊／射精管 · 攝護腺窦／攝護腺小管） · 尿道球腺

Completion of bone maturation and termination of expansion. This occurs indirectly via estradiol metabolites and hence extra little by little in Guys than Girls.

层次（皮膚 · 肉膜 · 精索外筋膜 · 提睾肌／提睾肌筋膜 · 精索内筋膜 · 会阴缝）

尿道内口 · 尿道（攝護腺部 · 中部 · 海绵体部） · 舟状窝 · 尿道外口 · 莫尔加尼尿道陷窝 · 尿道腺

Falling in appreciate has actually been connected with decreases in Males's testosterone ranges while blended alterations are noted for women's testosterone concentrations.[81][82] There was speculation that these alterations in testosterone result in the temporary reduction of dissimilarities in habits in between the sexes.

The connection amongst testosterone and aggression might also purpose indirectly, as it has been proposed that testosterone isn't going to amplify tendencies towards aggression, but relatively amplifies what ever tendencies will permit somebody to maintain social status when challenged. In most animals, aggression could be the means of keeping social position. Nevertheless, human beings have various ways of obtaining standing. This might reveal why some research discover a url concerning testosterone and Professional-social behaviour, if pro-social behaviour is rewarded with social standing. Consequently the link in between testosterone and aggression and violence is due to these getting rewarded with social standing.[128] The relationship may additionally be considered one of a "permissive outcome" whereby testosterone does elevate aggression levels, but only within the sense of letting common aggression amounts to get taken nexalin Reviews care of; chemically or physically castrating the individual will reduce aggression levels (though not eliminate them) but the person only desires a small-degree of pre-castration testosterone to get aggression ranges to return to regular, which they may remain at regardless of whether further testosterone is added.