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低睾丸激素

睾丸激素is a hormone produced by the human body. It’s mainly produced in men by thetesticles。睾丸激素会影响男人的外表和性发展。它刺激精子的产生和男人的生产sex drive。It also helps build muscle and bone mass.

睾丸激素production typically decreases with age. According to theAmerican Urological Association，大约有10名60岁以上的男性中有2人患有低睾丸激素。这在70年代和80年代的10名男性中略有增加到3分。

Men can experience a range of symptoms if testosterone decreases more than it should. Low testosterone, or low T, is diagnosed when levels fall below 300 nanograms per deciliter (ng/dL).

根据食品药品监督管理局的数据，正常范围通常为300至1,000 ng/dl。一种称为血清睾丸激素测试的血液测试用于确定您的循环睾丸激素水平。

A range of symptoms can occur if testosterone production drastically drops below normal. Signs of low T are often subtle. Here are 12 signs of low T in men.

睾丸激素在男性的性欲（性欲）中起关键作用。随着年龄的增长，有些男人的性欲可能会下降。但是，t较低的人可能会遭受性爱的渴望下降。

虽然睾丸激素刺激了男人的性欲，但它也有助于实现和维持勃起。仅凭睾丸激素不会引起勃起，但它会刺激大脑中的受体产生一氧化氮。

一氧化氮是一种有助于触发勃起所需的化学反应的分子。当睾丸激素水平太低时，一个人可能难以在性生活之前实现勃起或自发勃起（例如，在睡眠期间）。

However, testosterone is only one of many factors that aid in adequate erections. Research is inconclusive regarding the role oftestosterone replacement治疗勃起功能障碍。

在研究勃起困难男性睾丸激素的研究的综述中， 将近一半 睾丸激素治疗没有改善。很多时候，其他健康问题在勃起困难中起作用。这些可以包括：

睾丸激素在精液的生产中起作用，这是有助于精子运动的乳白色液体。T低T的男性通常会注意到射精过程中精液的体积减少。

睾丸激素在包括头发的几种身体功能中起作用。秃顶是许多男人衰老的自然组成部分。虽然有一个继承的组件balding，T较低的男性也可能会损失身体和面部毛发。

t低的男性报告了极端fatigue并降低能量水平。如果您一直睡着了，或者发现很难锻炼身体，那么您可能会感到较低。

Because testosterone plays a role in building muscle, men with low T might notice a decrease in muscle mass. Studies 已经显示出睾丸激素会影响肌肉质量，但不一定是力量或功能。

T低T的男性体内脂肪也可能会增加。特别是他们有时会发展Gynecomastia, or enlarged breast tissue. This effect is believed to occur due to an imbalance between testosterone and estrogen within men.

骨质疏松症, or the thinning of bone mass, is a condition often associated with women. However, men with low T can also experience bone loss. Testosterone helps produce and strengthen bone. So men with low T, especially older men, have lower bone volume and are more susceptible to bone fractures.

低T可以体验到的男人changes in mood。因为睾丸激素会影响人体的许多身体过程，所以它也会影响情绪和心理能力。 Research 表明，T低的男性更有可能面临抑郁，烦躁或缺乏专注。

睾丸激素水平和认知功能（尤其是记忆）随着年龄的增长而下降。结果，医生认为较低的睾丸激素水平可能导致受影响的记忆。

根据发表在 美国医学协会杂志 , some smaller research studies have linked testosterone supplementation with improved memory in men with low levels. However, the study’s authors did not observe memory improvements in their study of 493 men with low testosterone levels who took testosterone or a placebo.

低睾丸激素levels in the body can contribute to smaller-than-average sized testicles. Because the body requires testosterone to develop the penis and testicles, low levels could contribute to a disproportionately smaller penis or testicles compared to a man with normal testosterone levels.

However, there are other causes of smaller-than-normal testicles in addition to low testosterone levels, so this isn’t always just a low testosterone symptom.

根据研究文章 美国医学协会杂志 。

When the researchers administered testosterone gel to anemic men who also had low testosterone, they saw improvements in blood counts compared to men who used a placebo gel. Some of the symptoms anemia can cause include problems concentrating, dizziness, leg cramping, problems sleeping, and an abnormally rapid heart rate.

与女性在更年期的激素水平迅速下降不同，随着时间的推移，男性的睾丸激素水平逐渐下降。这个男人年龄越大，他越有可能体验低于正常的睾丸激素水平。

睾丸激素水平低于300 ng/dl的男性可能会出现一定程度的低T症状。您的医生可以进行血液检查，并在需要时建议治疗。他们也可以讨论睾丸激素药物的潜在益处和风险。

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Read this article in Spanish。