How much test do we produce per week naturaly

[Eddie8]

You also have to take into account SHBG, which binds testosterone to render it unavailable to ARs. As you get older, your levels of SHBG increase AND your teast production/day decreases. So, it's your ratio of test:SHBG that's really important...aka free test. When you take in exogenous test (AAS), your SHBG levels will increase in response to supraphysiological test levels, but SHBG levels won't get nearly high enough to give you the same kind of SHBG:test ratios you have down at normal physiological levels of test. So, you'll have a much greater percentage of free test.

So would you say that an older person might need to take a little more exogenous test to overcome the naturally increasing SHBG levels? Is there anything we can take to decrease our SHBG levels specifically or is it a non issue when on AAS?

[einstein1905]

So would you say that an older person might need to take a little more exogenous test to overcome the naturally increasing SHBG levels? Is there anything we can take to decrease our SHBG levels specifically or is it a non issue when on AAS?

You could look at it that way...that an older person may need to take more to offset the increased SHBG levels, but I'd say, with the amounts of exogenous test we take in, those levels are negligible compared to those induced in response to the exogenous test itself. I'm not aware of anything available to reduce SHBG levels other than laying off the juice for a while. People who stay on test for very long times and sometimes bridge with lower, yet still supraphysiological, levels of test still see gains. This tells me that the SHBG levels, although they rise in response to more test, they become negligible as test levels get higher (via AAS).

I just brought up SHBG because your original question was regarding natural test production with age.