Human embryos and phoetus are actually exposed to high levels of estrogens, that origines serious disorders in the male reproductive tract, and is connected too with the high proportion of male sterility. The increasing levels of estro gens in prenatal environment answer to severa! causes: diet, oral anovulatories and chemical wastes in the environment. The author thinks over the probability that the exposition to high levels of estro gens in the prenatal phase presidsposes to breast cancer in the adult age.
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