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。
肾上腺髓质： 肾上腺素、去甲肾上腺素 － 肾上腺皮质： 醛固酮、皮质醇、脱氢表雄酮
The increase in testosterone in the course of Opposition predicted aggression in males, although not in females.[a hundred and fifteen] Subjects who interacted with handguns and an experimental video game showed increase in testosterone and aggression.[116] Purely natural assortment might need developed males for being extra sensitive to competitive and standing obstacle circumstances, and the interacting roles of testosterone are definitely the crucial component for intense conduct in these circumstances.
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）
If any of those organs — your hypothalamus, pituitary gland or gonads — aren’t Doing work Usually, that may cause irregular testosterone amounts.
Androgen receptors arise in many different vertebrate physique method tissues, and each males and females respond similarly to similar concentrations. Enormously differing quantities of testosterone prenatally, at puberty, and during existence account for any share of Organic discrepancies amongst males and females.
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）
在青春期時，睪酮會令孩童出現第一種雄激素上升可見的現象。這些現象包括：[來源請求]
For kids assigned male at beginning testosterone deficiency in the course of puberty may end up in the next:
雄甾酮：雄激素分解过程中的副产物，也可以源于黄体酮。其在男性与女性的血浆和尿液中浓度大致相等，有轻微的雄性化作用，但效果仅为睾酮的七分之一。
睪酮芳構化成雌二醇會對腦及骨這兩個人體重要的組織構成主要的影響。在骨中，雌二醇加速了軟骨成長為骨的過程，使骨端接合及完成生長的程序。在中樞神經中，雌二醇是給予下視丘的主要迴饋訊號，尤其在影響排卵素的分泌。在很多哺乳動物的腦部中，某些性別差異區域在出生前或產期的雄性化，都是受著睪酮所產生的雌二醇影響，決定將來的雄性性行為。
Testosterone is A necessary Portion of reproductive health and fitness and All round wellbeing for individuals assigned male at beginning. It’s pure for testosterone levels to range determined by your age and overall overall health.
The 2nd idea is analogous and known as "evolutionary neuroandrogenic (ENA) theory of male aggression".[107][108] Testosterone along with other androgens have developed to masculinize a brain for being competitive, even to The purpose of jeopardizing hurt to the individual and Other folks. By doing this, persons with masculinized brains because of pre-natal and Grownup daily life testosterone and androgens, greatly enhance their useful resource buying talents to outlive, bring in and copulate with mates just as much as feasible.
Testosterone is really a hormone that the gonads (testicles or ovaries) mostly produce. Testosterone amounts are naturally Considerably higher in folks assigned male at delivery than in men and women assigned female at delivery. If testosterone levels are way too testosterone higher or way too small, it could cause selected symptoms.