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What is the testosterone:cortisol ratio?

The testosterone:cortisol ratio shows an important relationship between two critical hormonal biomarkers. Testosterone is widely regarded as a major anabolic hormone [1]. Anabolic reactions create or build a product, and one function of testosterone is muscle growth. On the other hand, cortisol is linked to catabolism, which is the breakdown of products. In excess, cortisol may decrease muscle mass [2]. As a result, the testosterone:cortisol ratio is generally linked to athletic performance with most athletes seeking to increase this ratio to enhance tissue repair following exercise [3]. Along with muscle growth, a high testosterone:cortisol ratio may be linked to social aggression and psychopathy [4].

How can I better understand my testosterone:cortisol ratio?

When interpreting results, it is important to consider the rhythmic fluctuations that both testosterone and cortisol experience throughout the day.

Testosterone, like many hormones, follows a diurnal rhythm, peaking in the morning and dipping in the early evening [5]. Peak secretion occurs between 7 and 10 a.m., which is why testing testosterone levels in the morning helps to limit variations, particularly in younger men.

Testosterone

Cortisol also follows a diurnal rhythm that is affected by sleep- naturally rising in the early morning and falling in the evening.


Cortisol

 A high testosterone:cortisol ratio is preferred for athletes and may suggest well-rested conditions, effective training, or peak performance periods. A low testosterone:cortisol ratio may suggest high stress, overtraining, inadequate recovery, or illness. If you are concerned about any of your results, please consult with your physician.

How can I maintain an optimal testosterone:cortisol ratio?

If you need to maintain or adjust your testosterone:cortisol ratio, it is best to focus on improving your testosterone and cortisol levels.

Where can I learn more?

DISCLAIMER: IF YOU ARE CONCERNED WITH ANY OF YOUR RESULTS, PLEASE CONSULT WITH YOUR PHYSICIAN.

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