How rapidly do men's testosterone levels decline?

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Mark Moyad
Urology
Generally speaking, there is a reduction in blood levels of total testosterone at a rate of about 1 percent per year after the age of 30 years. In fact, some researchers have used the term “andropause” (“andro” meaning male) to describe the slow loss of testosterone over decades. Unlike female menopause, which results from the rapid loss of estrogen over several years, andropause is a gradual process. Also dissimilarly, when men lose weight their testosterone levels generally increase, and when women lose weight their levels of estrogen slightly decrease. Seems odd, but it is true!
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.