男、女更年期引起的一切变化都源于性腺分泌物的减少。男性睾丸分泌物为睾酮，女性卵巢分泌物以雌激素为代表，里面还有少许孕激素和雄性激素。从上图(男、女一生性腺分泌走势图)可见男、女性腺图的走势在45岁之前基本上相差无几.在幼儿期，出生后都会由母体带来一些性腺激素， Male and female menopause caused by all the changes are due to the reduction of gonadal secretions. Male testis secretion of testosterone, female ovarian secretions to estrogen as the representative, there are a few progesterone and androgen. From the figure (male and female gonad secretion charts) shows that the trend of male and female gland diagram is basically the same before the age of 45. In early childhood, after birth will be brought by the mother some gonadal hormones,