The following table by A. Vermeleun (1996)
shows total testosterone levels by age as well as free testosterone levels and SHBG levels in a sample of men.4 As you can see, total testosterone declines with aging.
My latest report
shows total testosterone as 781 ng / dl.
My recent blood levels
show my total testosterone is a little high but my free testosterone is negligible.
My recent tests with
her show a total testosterone of 45.6 ng / dl (normal) but my free testosterone direct was 5.7 pg / ml (high).
Not exact matches
They had 1362 male subjects, and the results
show that vitamin D has a linear positive association with serum
total and free
testosterone levels.
The male reproductive tract is a target for vitamin D, and vitamin D supplementation has been
shown to increase
total testosterone, bioavailable
testosterone and free
testosterone.
Not only do statin drugs negatively impact mitochondria, the energy powerhouses of your metabolism, they have been
shown to lower free and
total testosterone.
showed a six - second sprint increased
total testosterone levels.
Dr. Greger mentions this study on spearmint in women with PCOS
showing in just 5 days women were able to drop their free and
total testosterone levels by about 30 % drinking two cups of tea a day.
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.
Table 2 in the article
shows that the
total testosterone in vegans is 16 % higher than meat eaters.
Studies have
shown that NAC improves insulin sensitivity, lowers
total testosterone, reduces bad cholesterol and enhances fertility in PCOS patients.
Every study on spearmint tea has
shown a reduction in either
total or free
testosterone, and that's why it can clear acne.
The additional table below by D. Simon (1996)
shows total mean, medium, 5 % and 95 %
testosterone levels by age.5 Unfortunately, aside from study data, no medical organizations / communities provide any reference normal
testosterone levels based on age that men can look to as a reference.
Almost always, the labs
show an elevated
total serum
testosterone and a normal OR BELOW NORMAL calculated free
testosterone.
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.
Studies have
shown that
total testosterone decreases by approximately 30 % in healthy men between the ages of 25 and 75.
When shilajit has been purified and standardized, it has been
shown to increase
total serum
testosterone levels.