- https://blackvision.co.uk/@martinwhitehea?page=about
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But there are ranges over a lifetime by which testosterone levels are measured and compared at any age. For example, after age 30 years, a male’s testosterone levels, on average, decrease by 1% per year but can be as much as 2% per year.
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2026-04-03
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Updated 2026-04-03 06:08:08 +08:00