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。

Ovarian or testicular tumors: Androgen-manufacturing ovarian and testicular tumors can launch extra testosterone.

Testosterone has many key steps. It provides adverse feedback inhibition to the secretion of gonadotropin-releasing hormone from the hypothalamus as well as the secretion of luteinizing hormone from your pituitary gland. In addition it directs the development of your embryonic Wolffian ducts in to the vas deferens (ductus deferens) and seminal vesicles and stimulates the formation of muscle and bone.

The effects of testosterone in individuals along with other vertebrates come about Through numerous mechanisms: by activation in the androgen receptor (directly or as dihydrotestosterone), and by conversion to estradiol and activation of sure estrogen receptors.

睾酮# · 双氢睾酮 · 氟羟甲基睾酮 · 甲二氢睾酮 · 甲睾酮 · 另见同化类固醇

在其他脊索动物的组织内也会有雄激素受体，而雄性及雌性对睾酮的反应也相当一致。在出生前雄性与雌性的睾酮剂量的差异，会导致在青春期或整个生命上的生物差异。

阴茎根（阴茎脚 · 阴茎球 · 襻状韧带 · 悬韧带） · 阴茎体（阴茎海绵体 · 尿道海绵体） · 龟头（包皮 · 包皮系带 · 冠状沟） · 筋膜（阴茎皮下组织 · 布克氏筋膜） · 白膜 · 隔片）

在发育中的睾丸里的性索中，来自中胚层的上皮细胞成为塞尔托利氏细胞，辅助精子的形成。

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

Testosterone may basically exaggerate or amplify existing aggression; for instance, chimpanzees who receive testosterone will increase turn out to be extra aggressive to chimps lower than them during the social hierarchy, but will even now be submissive to chimps greater than them. Testosterone So won't make the chimpanzee indiscriminately intense, but as a substitute amplifies his pre-present aggression towards apoteket reduce-rated chimps.[129]

Polycystic ovarian syndrome (PCOS): This is a hormonal imbalance that has an effect on individuals with ovaries. It occurs in the event the ovaries generate excess androgens (testosterone). This imbalance in reproductive hormones triggers Actual physical signs or symptoms like extra human body hair and excess weight gain.

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The next idea is similar and called "evolutionary neuroandrogenic (ENA) theory of male aggression".[107][108] Testosterone and also other androgens have progressed to masculinize a brain to become competitive, even to The purpose of jeopardizing damage to the person and Other individuals. By doing so, people with masculinized brains as a result of pre-natal and Grownup everyday living testosterone and androgens, greatly enhance their useful resource attaining talents to survive, appeal to and copulate with mates as much as possible.

Testosterone is bundled on the globe Health and fitness Group's list of essential medicines, which are The key medications desired in a very standard wellness system.