A young adult man holding a baby while thinking about the role of testosterone in fertility and reproductive health.

Understanding the role of testosterone in fertility

September 19, 2024

Have you wondered if your testosterone levels could be impacting your reproductive health? Testosterone is a key hormone in regulating male fertility, sex drive and reproductive health. Understanding your levels may provide valuable insight into your reproductive potential.

 

What role does testosterone play in fertility?

Testosterone is produced by the testicles and regulated by the pituitary gland in the brain. It works together with two other hormones that are also produced by the pituitary gland, follicle-stimulating hormone (FSH) and luteinizing hormone (LH), to stimulate sperm production in a process called spermatogenesis.

 

LH stimulates the production of testosterone in the testes, which then works with FSH to produce sperm.

 

Does having low testosterone affect fertility?

Since testosterone levels naturally fluctuate over time, and free testosterone can be reduced by increased levels of sex hormone-binding globulin (SHBG) as a man ages, establishing a “normal” level of testosterone is difficult. Levels vary even throughout the course of a day, and morning samples are considered most reliable. Repeated testing and consultation with your healthcare provider can determine what might constitute your low, normal or elevated levels of testosterone.

 

Low testosterone, also known as hypogonadism, is associated with low sperm count and symptoms such as reduced muscle mass, depression and infertility. Among these symptoms are also erectile dysfunction and low libido, two factors that lower the chances of conception even further.

 

Can taking testosterone make you infertile?

Artificially high testosterone levels can have a similarly negative impact on your fertility. Anabolic steroids, testosterone replacement therapy (TRT) and overuse of testosterone supplements increase testosterone levels in the blood. The brain interprets excessive testosterone levels as a sign that production of testosterone is no longer needed and slows production in the testes.

 

Optimal testosterone levels vary from person to person, and testosterone supplementation isn’t right for everyone because it is not without risk. The only way to know how your testosterone levels might be impacting your fertility is to get tested.

 

How can you manage your testosterone levels?

There are ways to naturally boost testosterone levels by making lifestyle changes. You and your healthcare provider can choose what works best for you. Some options include:

 

  • Exercise and strength training
  • Maintaining a healthy diet
  • Limiting alcohol intake
  • Reducing stress

 

If you are curious how your testosterone levels may be affecting your ability to conceive, getting tested could be the first step in your fertility journey. Labcorp OnDemand’s Comprehensive Testosterone Test can give you a better understanding of how your levels may be impacting your fertility.

 

Please note that this test is only clinically appropriate for individuals assigned male at birth (AMAB). If you are an individual assigned female at birth (AFAB) seeking a testosterone test, you should contact your healthcare provider.