Testosterone deficiency throughout fetal enhancement doesn’t enable male characteristics to produce normally. This is named androgen insensitivity syndrome (AIS) and happens when someone is genetically male but is insensitive to androgens (male intercourse hormones).

Slowed progress in peak, but their arms and legs may perhaps carry on to expand away from proportion with the rest of their body.

Testosterone has numerous major steps. It offers negative suggestions inhibition within the secretion of gonadotropin-releasing hormone from your hypothalamus along with the secretion of luteinizing hormone in the pituitary gland. In addition, it directs the development on the embryonic Wolffian ducts to the vas deferens (ductus deferens) and seminal vesicles and stimulates the formation of muscle mass and bone.

陰莖根（阴茎脚 · 阴茎球 · 襻状韧带 · 悬韧带） · 阴茎体（陰莖海綿體 · 尿道海绵体） · 龟头（包皮 · 包皮繫帶 · 冠狀溝） · 筋膜（阴茎皮下组织 · 布克氏筋膜） · 白膜 · 隔片）

Usually, androgens such as testosterone promote protein synthesis and therefore growth of tissues with androgen receptors.[sixteen] Testosterone is often referred to as possessing anabolic and androgenic (virilising) effects, though these categorical descriptions are to some degree arbitrary, as There exists quite a lot of mutual overlap between them.[seventeen] The relative potency of these consequences can depend upon different elements and is also a subject of ongoing study.

If a father's testosterone levels lower in response to hearing their newborn cry, it is a sign of empathizing Together with the toddler. This really is linked to greater nurturing actions and improved results with the toddler.[ninety two]

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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。

成年男子不论服用或施打多少睾酮都无法再次促使阴茎的成长与发育（相反的，错误的使用激素，将可能造成体内原生激素紊乱，将无法自行生成使睾丸及阴茎萎缩，衍生出其他生殖系统疾病）

睪酮對成人的影響，對男性比較明顯，但對男女兩性都同樣重要。隨著年紀漸長，睪酮的份量下降，這些影響亦隨之而減少。這些影響包括：[來源請求]

Polycystic ovarian syndrome (PCOS): It is a hormonal imbalance that influences individuals with ovaries. It transpires if the ovaries make excess androgens (testosterone). This imbalance in reproductive hormones results in Actual physical indications like excessive overall body hair and pounds attain.

Pubertal consequences start to take place when androgen has long been greater than standard Grownup female concentrations for months or several years. In males, these are typically typical late pubertal results, and arise in Gals just after prolonged periods of heightened levels of totally free testosterone inside the blood. The results consist of:[30][31]

纠正因烧伤导致衰弱的疾病、广泛性手术和长期不活动之后所引起的蛋白质丧失，延长这类病人的稳定期。

Artificial testosterone is the principle drug of masculinizing hormone therapy, which can be a gender-affirming treatment that someone AFAB uses to make the secondary sex properties connected with being assigned male at beginning (AMAB).