性-人类性的基本层面
Sex - Basic Aspects of Human Sexuality

性激素的功能

睾丸激素：太少或太多？

在成人，激素不平衡也能够导致身体的改变。例如：在女性会长胡子，在男性会引起乳房发育。对于两性，缺乏睾丸激素能导致-但不是必定导致性欲缺乏。睾丸激素水平非常高则导致富有攻击性和增加性活动；但是，似乎心理社会因素在这个方面起着更重要的作用。

The Role of Hormones

Testosterone: Too little or too much?
Hormonal imbalances can lead to physical changes in adults, too. Examples: Growth of a beard in women, development of breasts in men. In either sex, a lack of testosterone can - but does not have to - lead to a lack of sexual desire. A very high level of testosterone may contribute to aggressiveness and increased sexual activity. However, it seems that psychosocial factors play a more important role in this regard.