A乳腺癌是如何发病的?我国乳腺癌的发病年龄主要集中在40-45岁左右,国外女性45-50岁是第一高峰,之后逐步下降,到了60岁是第二高峰。其实,乳腺癌真正的病因至今尚未完全了解,但乳腺癌的发病与体内雌激素、孕激素有一定关系(如初潮及绝经年龄、生育情况、避孕药等),有些乳腺癌与家族遗传很有关系,另外饮食、肥胖等因素也可能导致发病。先来说说遗传。第一代亲属(母亲、姐妹等)中如果发现有乳腺癌, A Breast cancer is how the incidence? The incidence of breast cancer in China is mainly concentrated in the age of 40-45 years old, foreign women 45-50 years old is the first peak, then gradually declined to the age of 60 is the second peak. In fact, the true cause of breast cancer has not yet fully understood, but the incidence of breast cancer and estrogen and progesterone in vivo have a certain relationship (such as menarche and menopause age, fertility, contraceptives, etc.), some breast cancer and familial heredity Relationship, other diet, obesity and other factors may also lead to the disease. Let’s talk about inheritance If the first generation of relatives (mothers, sisters, etc.) found breast cancer,