Free Testosterone: First Line Player


Recently there has been lively debate about which is better –total testosterone or free testosterone. Each has its own story, but for the purpose of this article we will stick to free testosterone (the true testosterone).

We know that most testosterone binds to SHBG, a small amount binds to albumin, and only free testosterone remains unbound. That’s why it is called free testosterone.

Unfortunately only small amounts of testosterone are free in older men because of the natural decrease in T levels and rise in SHBG levels during aging.

But your body always strives for homeostasis –maintaining a normal environment in your body.


Total testosterone includes free testosterone, testosterone bound to SHBG, and testosterone bound to albumin.

Free testosterone is that small portion of testosterone not bound to SHBG or albumin.

Bioavailable T is a combination of that small portion of free testosterone and a larger portion of testosterone that is only loosely bound to albumin. Some scientists refer to it as the amount of testosterone that is not bound to SHBG.

Keep in mind that there are situations in which total testosterone is low but bioavailable testosterone or free testosterone is normal.

The Truth

You probably hear every day about the evils of saturated fat. Some of this information is just plain wrong, such as it will clog your arteries, kill you through heart disease, make you fat, blah, blah, blah.

Believing all this false information can get you in trouble.

Consider these three truths about saturated fat:

•   Dr. Andrew Weil, an anti-saturated fat guru, admitted he was wrong about the effect saturated fat has on health.

•   He acknowledged the role that a high-carbohydrate diet (especially refined carbs that the American diet is full of) has in degenerative diseases.

•   Meta-analysis of 21 studies published in The American Journal of Clinical Nutrition found that saturated fats were not ...

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