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Old 04-23-2013, 09:52 PM   #118
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Originally Posted by KK Partizan View Post
Testosterone levels begin declining in men's twenties nowadays. If I recall, men's testosterone levels (for the typical 20 year old today) are equal to that of a 40 year old in the 50-60's..
Is this true? Why the decline since the 1960s?
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