Supplemental male hormones are available but their use disrupts the body's natural balances and can cause negative feedback inhibition. When this occurs, exogenous hormones (pills) send a signal to hormone-producing tissues that hormone levels are high enough. Endogenous (from the body itself) production therefore slows. Over time this can weaken hormone-producing tissues so that the initial problem of inadequate production is compounded. This is at least part of the mechanism for the adverse effects of anabolic (male hormone-like) steroids taken by athletes and bodybuilders.

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Tags: sex, hormones, testosterone, libido, impotence, prostate, fertility, health, nutrition

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