Please, could somebody point me to the literature on estradiol and testosterone changes in females and males as a function of age? I come across articles on the reduction of both hormones in aging males and females, however, I am unable to find anything on how the hormone levels change (if they do) from the age of 18 till 40 or so. I understand that estradiol levels fluctuate based on the menstrual cycle. I guess I am looking for an average value by decade (or similar).

Any help is much appreciated.