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At all around week 7 in utero, the intercourse-associated gene on the Y chromosome initiates the event on the testicles in male infants. The testicles develop testosterone.
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
The increase in testosterone for the duration of Level of competition predicted aggression in males, but not in females.[one hundred fifteen] Topics who interacted with handguns and an experimental match confirmed increase in testosterone and aggression.[116] Purely natural variety might need evolved males being more delicate to competitive and standing problem conditions, and that the interacting roles of testosterone are the vital ingredient for intense behaviour in these predicaments.
由於睪酮能提升體能，一些運動員為保持體育狀態或表現，會於賽前使用睪酮。男運動員在賽前數小時，可以將睪酮注射陰囊內，激化身體的狀態。但現時大部份的體育項目都已把睪酮定為禁藥。
It’s not likely — and hard to notify — that an adult assigned male at birth has bigger-than-usual levels of testosterone.
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利用睾酮的男性化作用，跨性别男性（即由女性经由变性成为男性）会以睾酮作为替代，以维持至一般正常男性的睾酮水平。同样地，跨性别女性会使用药物抑制睾酮的生成，以让雌激素发挥效用。
Besides its function like a normal hormone, testosterone is applied to be a medication to take care of hypogonadism and breast most cancers.[thirteen] Due to the fact testosterone degrees lessen as Males age, testosterone is typically used in more mature Adult men to counteract this deficiency.
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）
[147] The T-receptor or DHT-receptor elaborate undergoes a structural adjust that allows it to maneuver in to the mobile nucleus and bind directly to precise nucleotide sequences in the chromosomal DNA. The parts of binding are referred to as hormone reaction factors (HREs), and affect transcriptional action of certain genes, manufacturing the androgen effects.
When the extent of paternal treatment differs concerning cultures, higher investment decision in direct little one care has actually been noticed to become correlated with lessen average testosterone levels in addition to temporary fluctuations.[ninety one] For instance, fluctuation in testosterone levels when a kid is in distress has long been uncovered being indicative of fathering variations.
睾酮# · 双氢睾酮 · 氟羟甲基睾酮 · 甲二氢睾酮 · 甲睾酮 · 另见同化類固醇
Artificial testosterone is the principle drug of masculinizing hormone therapy, which is a gender-affirming treatment that somebody AFAB employs to create the Special Deal secondary sex characteristics associated with staying assigned male at start (AMAB).