(39) showed a positive relationship between serum estradiol levels and breast cancer. relationship between increasing risk and higher hormone levels (45,46). Likewise, women who take postmenopausal hormones may have higher rates Among women 55–59 years old who had menopause before age 47, there is
E.g., male red deer live peacefully together for most of the year. in old age, but testosterone levels are nearly constant from adolescence to old age in traditional societies in the other three countries. Women's ovaries produce estrogen and progesterone. . To attract women, men need pheromones without body odor.