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Thread: Test. Levels..?

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  1. #1
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    Test. Levels..?

    Does anyone know..or has a chart of how our Testosterone levels change with age? (how many ml we produce with age..)

    thanks

  2. #2
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    A normal male produces 7-10mg per day.

    One of the largest studies to look at testosterone levels in aging men was the Massachusetts Male Aging Study. It found that total testosterone levels declined by about five percent per decade from the thirties to the seventies and more precipitously in ill or obese men. Some men didn’t have much of a decline at all. This set back general acceptance of TRT in aging for many decades, because many physicians didn’t think this was enough of a decline to warrant treatment. What wasn’t appreciated enough, however, was that the free testosterone level—the most biologically important fraction—declined twice as fast, about 10 percent per decade, so that approximately 50 percent of men over 55 years old have ‘hypogonadism,’ defined as levels below the lowest normal range for young men. Subsequently, many well-designed studies have corroborated these numbers, and it is widely agreed in the endocrine literature that over time testosterone levels decline in men, often to a point equivalent to menopause in women. (The reason that the total testosterone does not decline as steeply with age is that there is an increase in SHBG with age which offsets the decline in testosterone production.)
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  3. #3
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    thanks

  4. #4
    . Delphi's Avatar
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    Wow if you could come up with a protein that displaces the testosterone molecule from its binding site on the SHBG molecule you could get a test spike without actually taking any test. I wonder if Patrick Arnold or ParDeus ever thought along those lines.

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