Free testosterone levels will decline faster
than total testosterone levels.
This is arguably more important
than the total testosterone level.
Free testosterone levels, by the way, are a much more important measure
than total testosterone.
Even worse, free testosterone (testosterone not bound in the blood to sex hormone - binding globulin (SHBG)-RRB- levels decline more rapidly
than total testosterone.
Not exact matches
The study found that while there was no change in body weight,
testosterone treatment produced a reduction in
total body fat of 3 kilograms (more
than six pounds) while increasing muscle mass by the same amount.
The range of what constitutes normal
testosterone levels differs from one medical center or lab to the next, although it is widely recognized that a man with a concentration of
total serum
testosterone less
than 200 ng / dL is to be considered hypogonadal.
That is faster
than the decline of
total testosterone, which drops at a rate of 30 percent from age 25 to age 75.
In fact, a study in the American Journal of Clinical Nutrition found that men who followed a high - fat, low - fiber diet for 10 weeks had 13 % higher
total testosterone than subjects who ate low fat and high fiber.
Total testosterone: less
than 20 and
testosterone free calc.
It is typical for females to need a much higher
than normal
total testosterone level to achieve a desirable free
testosterone level.
In fact more
than thirty - nine percent of all males aged forty - five and older have
total testosterone levels considered below normal.
If this is the case, a man may have normal
total testosterone levels but less
than normal free T levels.3
More
than 430,000 men were part of longitudinal studies over the course of the past 67 years, and no well - designed study has ever shown a direct correlation between
total testosterone levels and prostate cancer.
However, variations are greater among free
testosterone assays
than among
total testosterone assays.
Your free
testosterone matters much more
than your
total.
Table 2 in the article shows that the
total testosterone in vegans is 16 % higher
than meat eaters.
Less
than 20 % of
total calories from fat tends to decrease free
testosterone levels.
While typical serving sizes (one to three of soy foods, or less
than 25g of soy protein from non-concentrated sources like tofu) have not been shown to be problematic, amounts more
than that (
totaling around 100 mg isoflavones or greater daily) could negatively impact
testosterone.
So, your free
testosterone (which is MUCH more important
than your
total) is barely normal, not elevated.
One longitudinal study found that men with low
total testosterone (less
than 241 ng / dl) were up to 40 % more likely to die
than their counterparts.