The second cause of hypogonadism is secondary hypogonadism, which is also called hypogonadotropic hypogonadism because there are low levels of luteinizing and follicle stimulating hormones.

性腺功能减退的第二个病因是继发性性腺功能减退症，也称为低促性腺素性性腺功能减退症，因为LH和FSH激素水平在此病中都显著降低。

Secondary hypogonadism can be due to hypothalamus or pituitary gland dysfunction; either from an inability to produce gonadotropin-releasing hormone or luteinizing and follicle stimulating hormones, or suppression from other hormones, like prolactin or thyroid hormone.

继发性性腺功能减退症可由下丘脑或垂体功能障碍导致，既可能是促性腺激素释放激素、黄体生成素和卵泡刺激素的生成能力低下，也可能是以上激素的分泌受到了其他激素的抑制，例如泌乳素或甲状腺激素。

Just like in secondary hypogonadism, there's a lack of gonadotropin-releasing hormone, but the key difference is that it's not considered pathologic - instead, it's thought to be a naturally slowed rate of maturation.

与继发性性腺功能减退症类似，也存在GnRH的缺乏，但关键的区别在于这种缺乏不是病理性的，而是一种正常的发育延迟。