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TESTOSTERONE: What Is It? Why Does It Matter? How Do You Boost It?

Jenna Offerdahl

Updated: Feb 14


Muscular man in the gym lifting weights


What is Testosterone?

Testosterone is a hormone primarily produced in the testes for men and in small amounts by the adrenal glands in both sexes. Known as the “male sex hormone,” testosterone plays a significant role in muscle mass, bone density, fat distribution, and energy levels. It’s also essential for mental health, mood stability, and motivation.

While both men and women produce testosterone, men have significantly higher levels, making it a key hormone for male physical characteristics and overall health.

Why is Testosterone Important?


Testosterone affects almost every system in the male body:

  • Muscle Mass & Strength: High testosterone levels help in building and maintaining muscle mass and strength.

  • Bone Density: It supports bone health, reducing the risk of osteoporosis.

  • Energy & Mood: Testosterone impacts mood regulation, energy levels, and motivation.

  • Libido & Sexual Health: It drives libido, aids in sperm production, and contributes to overall sexual health.

  • Heart Health: Research suggests a link between testosterone and cardiovascular health, though the relationship is complex and still being studied.


Low testosterone levels, or “low T,” can lead to fatigue, depression, reduced libido, weight gain, and decreased muscle mass.


Over the past decade, there has been a concerning decrease in average testosterone levels among men. Studies show that testosterone levels are, on average, 25% lower today than they were in the 1980s. This decline has only continued, with research indicating a steady drop each year, with many men experiencing lower-than-expected testosterone levels even in their 30s and 40s.


Some data highlights include:

  • 40% of men over age 45 experience low testosterone.

  • 1 in 4 men over 30 has low T levels.

  • Average testosterone levels in 2023 are 20% lower than they were just 10 years ago.


What’s Causing the Drop in Testosterone Levels?

  1. Lifestyle Choices: Sedentary lifestyles, poor diet, lack of sleep, and chronic stress are primary culprits. High-stress levels increase cortisol production, which can interfere with testosterone production.

  2. Obesity and Metabolic Syndrome: Excess body fat, especially around the abdomen, leads to higher estrogen levels, lowering testosterone.

  3. Environmental Factors: Increasing exposure to endocrine disruptors (such as plastics, pesticides, and other chemicals) is known to impact hormone production.

  4. Poor Sleep: Testosterone production peaks during sleep, particularly in deep REM cycles. Sleep deprivation and disorders like sleep apnea disrupt this process.

  5. Age: Testosterone naturally declines with age, with levels dropping approximately 1% per year after the age of 30. However, lifestyle and environmental factors can accelerate this decline.


How to Boost Testosterone Naturally

While medical options like testosterone replacement therapy exist, there are also natural and lifestyle-based strategies for boosting testosterone:

  1. Exercise Regularly: Strength training and high-intensity interval training (HIIT) are especially effective. Studies show that lifting weights increases testosterone levels, particularly when large muscle groups are engaged.

  2. Prioritize Quality Sleep: Aim for 7-8 hours of uninterrupted sleep per night. Improving sleep hygiene—avoiding screens before bed, keeping a cool, dark room, and sticking to a regular schedule—can improve testosterone production.

  3. Optimize Nutrition: A balanced diet with healthy fats, protein, and complex carbs supports testosterone levels. Foods like eggs, fatty fish, lean meats, leafy greens, and nuts are rich in the nutrients needed for testosterone production.

  4. Reduce Stress: Chronic stress increases cortisol, which inhibits testosterone production. Regular meditation, deep breathing exercises, and stress-relieving hobbies can help manage stress levels.

  5. Maintain a Healthy Weight: Excess body fat, especially around the abdomen, leads to higher estrogen production, which can lower testosterone. Maintaining a healthy body weight through diet and exercise is crucial.

  6. Limit Alcohol & Avoid Toxins: Excessive alcohol intake and exposure to environmental toxins (like BPA in plastics) have been shown to reduce testosterone.

  7. Consider Supplementation: Vitamin D, zinc, and magnesium are crucial for testosterone production. If you’re low in these nutrients, consider supplementation after consulting a healthcare provider.


Testosterone is essential to men’s health, impacting physical performance, mental well-being, and sexual health. However, declining testosterone levels have become increasingly common, with lifestyle factors, environmental toxins, and poor diet as major contributors. By adopting a healthy lifestyle—regular exercise, good sleep, balanced nutrition, and stress management—men can naturally boost testosterone and improve their overall quality of life.

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