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-developing ovarian and testicular tumors can release excessive testosterone.
Testosterone has various big steps. It provides detrimental suggestions inhibition about the secretion of gonadotropin-releasing hormone from the hypothalamus along with the secretion of luteinizing hormone from the pituitary gland. In addition, it directs the development on the embryonic Wolffian ducts in the vas deferens (ductus deferens) and seminal vesicles and stimulates the formation of muscle and bone.
精囊 · 精腺排泄管 · 摄护腺（尿道嵴／精阜／摄护腺小囊／射精管 · 摄护腺窦／摄护腺小管） · 尿道球腺
If you believe you might have indicators of small testosterone or extra testosterone, discuss with your healthcare provider. They can buy some checks or deliver you to a professional.
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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。
When they’re continuously substantial or minimal, you could practical experience disagreeable indications well worth speaking about using your company. Treatment options can be obtained that could aid.
成年男子不論服用或施打多少睪酮都無法再次促使陰莖的成長與發育（相反的，錯誤的使用激素，將可能造成體內原生激素紊亂，將無法自行生成使睪丸及陰莖萎縮，衍生出其他生殖系統疾病）
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）
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。
Slipping in enjoy has been joined with decreases in Adult men's testosterone levels while blended variations are described for Girls's testosterone concentrations.[81][82] There Buzz worthy have been speculation that these variations in testosterone end in the short term reduction of distinctions in behavior between the sexes.
Testosterone is usually a hormone that your gonads (testicles or ovaries) primarily make. Testosterone stages are Normally Substantially larger in persons assigned male at birth than in men and women assigned female at birth. If testosterone degrees are much too significant or as well lower, it may cause specific symptoms.