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Understanding Your Hormones: Testosterone and Men’s Health

The Pulse
June 2025

Testosterone is often associated with macho men or aggressive behavior. But testosterone plays a much larger role than the myths linked with it. It’s a hormone found in both males and females, but levels are much higher in males.  

In men, testosterone is a hormone produced by the gonads (sex organs). It plays different roles in three life stages:  

  • Fetal development – Testosterone initiates the development of male internal and external reproductive organs.  

  • Puberty – Testosterone causes changes such as an increase in height, body and pubic hair; enlargement of the penis, testes and prostate gland; and an increase in libido.  

  • Adulthood – Testosterone is essential for sperm production, new red blood cells, bone and muscle strength, and a sense of well-being.  

testosterone molecule graphic

Testosterone Levels 

Having too little or too much testosterone can have a negative effect on your health. It’s usually the highest in the morning and lowest in the evening. There are signs to look for that can indicate high and low testosterone levels.  

High Testosterone 

Testosterone levels vary over time and during the day. Some symptoms of high testosterone include:  

  • low sperm count  

  • prostate enlargement with difficulty urinating  

  • acne  

  • weight gain  

  • increased muscle mass  

  • mood swings and irritability  

Low Testosterone 

Men over age 45 may have a higher frequency of low testosterone levels. Some symptoms include:  

  • reduced body and facial hair  

  • decreased muscle mass  

  • low libido  

  • poor concentration  

  • brittle bones  

Testosterone is essential in men for reproductive and overall health. It’s natural for testosterone levels to fluctuate depending on age and overall health. However, if levels are consistently high or low, treatments are available.  

Your Primary Care Provider can check your testosterone levels with a blood test and recommend treatments to relieve your symptoms.   

Provider Finder®

If you don’t have a PCP or want to find a new doctor, you can use Provider Finder® to search for an in-network provider. 

You can also call a plan specialist, called a Personal Health Guide, for help at 1-866-355-5999 or chat through the BCBSTX App, 24/7.