Cultural change and the reproductive cycle.
What we regard as 'normal' or 'natural' with respect to human female reproductive physiology differs greatly from the reproductive cycle experienced during most of human existence. Frequent ovulatory menstrual cycles really represent repeated abortive reproductive cycles and are unphysiological. A number of medical conditions, some of great importance, are the result of this change in the character of the reproductive cycle. Suppression of the menstrual cycle offers a means of decreasing the incidence and severity of these medical conditions.
Dennis
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D000818:Animals; D001721:Birth Intervals; D001942:Breast Feeding; D003468:Cultural Evolution; D005260:Female; D005831:Genital Diseases, Female / Q000453:epidemiology / Q000503:physiopathology; D015186:Hominidae / Q000502:physiology; D006801:Humans; D008597:Menstrual Cycle / Q000502:physiology*; D011247:Pregnancy; D012098:Reproduction / Q000502:physiology*