Although both sexes normally secrete some female hormones (estrogens) from birth until death, by far the heaviest output is among women who are old enough to bear children. From early teens to the early 50s, women have a negligible incidence of heart attacks as compared with men. After the menopause, a woman's immunity gradually fades until, about the age of 75, she is statistically as susceptible to heart attacks as a man. If it is indeed the estrogens that confer middle-life immunity, can it be prolonged by taking estrogen tablets—and can men get...
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