Testosterone levels naturally vary across different ages, reflecting significant changes in a man’s life. Understanding your testosterone levels is key to managing your health as you age, as these levels can impact everything from muscle mass and libido to mood and energy levels.

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In this blog post, with the help of a comprehensive chart detailing normal and ideal testosterone levels by age, you can gain insights into what to expect with your testosterone levels as you grow older. This knowledge allows for proactive measures in maintaining hormonal balance, ensuring a higher quality of life. 

What is testosterone?

Testosterone is often recognized as the primary male sex hormone, but its role in the body is vast and complex. It’s vital not just for sexual development and reproduction but also plays a crucial role in the maintenance of muscle mass, bone density, and red blood cell production. 

Additionally, testosterone influences mood, energy levels, and overall physical and mental health. Produced mainly in the testes in men and the ovaries in women, with a small amount made by the adrenal glands, its levels can significantly impact one’s quality of life.

Understanding testosterone is the first step in recognizing its importance in your body’s function. It helps in the development of male physical features like body and facial hair, deeper voice, and muscle strength. For women, testosterone is produced in smaller amounts but is essential for bone strength and sexual interest. 

What is Considered a Low Testosterone Level in a Man?

Low testosterone, or hypogonadism, occurs when the body doesn’t produce enough testosterone. In men, it’s diagnosed when levels fall below 300 nanograms per deciliter (ng/dL). 

Symptoms of low testosterone can vary and might include reduced libido, erectile dysfunction, fatigue, decreased muscle mass, increased body fat, and mood changes such as depression or irritability. It’s also associated with longer-term health risks like osteoporosis, metabolic syndrome, and cardiovascular issues.

If you’re experiencing symptoms of low testosterone, it’s crucial to seek professional guidance to address these issues safely and effectively.

Testosterone levels by age chart

Understanding how testosterone levels change with age can help you monitor your health and identify potential issues early. Here’s a simplified guide to testosterone levels in males and females by age, designed to be easy to read and understand.

Testosterone Levels in Males by Age

  • Infants and Children (Birth to 9 years): Levels are typically less than 7-20 ng/dL, reflecting the low need for testosterone in early life.
  • Puberty: Testosterone levels start to increase significantly to support physical changes.
  • Ages 10-11: Less than 7-130 ng/dL
  • Ages 12-13: 5-619 ng/dL
  • Ages 14-15: 100-320 ng/dL
  • Ages 16-17: 200-970 ng/dL, marking the peak of puberty-related increases.


  • Ages 18-19 and older: 265-923 ng/dL, as levels begin to stabilize.
  • Ages 20-39: 400-1080 ng/dL, representing peak adult levels.
  • Ages 40-59: 350-890 ng/dL, showing the start of a gradual decline.
  • Ages 60 and above: Levels continue to decline; for a 60-year-old, the normal range is 196-859 ng/dL, and for a 70-year-old, it’s 156-819 ng/dL, reflecting the natural decrease in testosterone production with age.
Age GroupTestosterone Levels (ng/dL)
0-9 years<7-20
10-11 years<7-130
12-13 years5-619
14-15 years100-320
16-17 years200-970
18-19+ years265-923
20-39 years400-1080
40-59 years350-890
60 years196-859
70 years156-819

Why You Need Healthy Testosterone Levels For Your Age

Maintaining healthy testosterone levels is crucial for overall well-being and health, regardless of your age. Testosterone, often associated with masculinity, actually plays a vital role in various bodily functions for both men and women. 

As you age, your body’s natural ability to produce testosterone diminishes, making it important to monitor and maintain these levels to ensure a high quality of life and optimal health.

Muscle Mass and Bone Density

Testosterone is essential for developing and maintaining muscle mass and bone density. Healthy levels help prevent osteoporosis and fractures, especially in older adults. Moreover, it supports your ability to stay active and engage in physical activities, which is vital for overall health and longevity.

Fat Distribution and Metabolism

Testosterone influences body fat distribution and metabolism. Low levels can lead to increased body fat, particularly in the abdominal area, and may contribute to obesity-related conditions such as type 2 diabetes and metabolic syndrome. Maintaining healthy testosterone levels helps ensure a healthier body composition and metabolic rate.

Mood and Mental Health

There’s a significant link between testosterone levels and mood. Low levels have been associated with depression, irritability, and a decrease in overall well-being. Keeping your testosterone levels within a healthy range can contribute to better mental health and a more stable mood.

Libido and Sexual Function

Testosterone plays a key role in libido and sexual function for both men and women. Healthy levels are important for maintaining sexual desire and performance, contributing to healthier relationships and personal satisfaction.

Energy Levels and Vitality

Finally, testosterone is critical for maintaining energy levels and overall vitality. Low levels can lead to fatigue, reducing your ability to engage in daily activities and enjoy life. Healthy testosterone levels support a more energetic and vibrant lifestyle.

What Level of Testosterone is Needed to be Treated for Men?

Generally, a testosterone level below 300 nanograms per deciliter (ng/dL) is diagnosed as low testosterone (hypogonadism) in men. However, the decision to treat is not based solely on numbers. It also considers symptoms related to low testosterone, such as fatigue, muscle weakness, low libido, and mood changes.

Treatment for low testosterone is highly individualized. A healthcare provider will evaluate your symptoms, overall health, and specific testosterone levels to determine if TRT or other interventions are appropriate. 

TRT can have significant benefits but also comes with potential risks. A careful evaluation of the benefits and risks, personalized to your health status and needs, is the best approach to managing low testosterone levels in men.

Take Control of Your Hormonal Health with Best TRT

Understanding the normal and ideal testosterone levels for your age is the first step towards taking charge of your health and well-being. Armed with this knowledge, you can make informed decisions about how to maintain or improve your hormonal balance, ensuring that you stay energized, strong, and mentally sharp as you age.

If you find that your levels are not where they should be, Best TRT is here to help. Our online platform offers accessible and convenient Testosterone Replacement Therapy (TRT), tailored to meet your individual needs. With Best TRT, you can confidently address any hormonal imbalances with the support of experts, ensuring you live your best life, no matter your age.Schedule your free TRT consultation here and rediscover your best life with Best TRT!

author avatar

James Harrington

James Harrington stands as a leading authority in testosterone replacement therapy (TRT). With rigorous academic training and deep-rooted experience in health and wellness, he offers unparalleled expertise to Best TRT. His blend of scholarly knowledge and real-world experience makes him an indispensable guide for anyone delving into the intricacies of TRT.

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