Non-Hormonal Strategies to Optimize Testosterone

Non-Hormonal Strategies to Optimize Testosterone

Researching the internet for “how to raise testosterone levels naturally” will yield thousands upon thousands of different articles and podcasts detailing a myriad of different ways to optimize your hormonal profile. These strategies can work, and by changing different components of your lifestyle, you can move the needle into a more favorable range. Clinical studies show that targeted exercise, sleep, stress management, and diet can modestly raise total and free testosterone within physiological ranges. Below, we outline peer-reviewed data from multiple trials on these non-hormonal approaches and how you can integrate them into your life.

Resistance Training and Weight Loss

Regular resistance exercise is one of the easier and accessible ways to boost your testosterone. Weight training causes acute spikes in testosterone, but its effect on resting levels depends on one’s fitness and body composition. In lean, trained men, resistance workouts don’t significantly change baseline testosterone levels¹. However, in overweight or inactive men, consistent exercise often increases total testosterone by about 10–20% as their overall fitness level and body fat improve¹. Fat loss is a major factor in this hormonal shift because adipose tissue, or “fat” tissue, contains an enzyme called aromatase that converts testosterone into estradiol, a form of estrogen. The formation of increased estrogen will suppress testosterone production. There are other ways fat loss boosts testosterone, including improving insulin sensitivity, decreasing systemic inflammation, and lowering cortisol (our stress hormone).

Researchers note losing excess body weight towards a normal body mass index can significantly raise testosterone in obese men, often restoring testosterone to the mid-normal range¹. As with anything, striving to maintain a balance is important. For example, extreme endurance training (for example, competitive cycling, marathon running) can sometimes suppress testosterone levels, perhaps by chronic inflammatory states induced by this exercise or by insufficient caloric intake to meet their energy demands². So what is optimal? Moderate to high resistance or interval training 3-5 times per week for 30-60 minutes per day seems to be the sweet spot and compatible with most working men’s schedules. This will meaningfully boost testosterone and prevent both age-related decline and decline due to obesity. In future articles, we will provide ways to plan your own personalized exercise routine to meet these minimum training requirements for increasing your testosterone naturally. 

Sleep Optimization

Adequate sleep is essential for maintenance of optimal testosterone levels. Testosterone levels follow a circadian rhythm, peaking during deep sleep. Clinical research shows that even short-term sleep deprivation can dramatically lower testosterone. One study published in the Journal of the American Medical Association (JAMA) showed that young men (mean age of 24 years old) restricted to 5 hours of sleep for just one week saw a 10-15% drop in total testosterone – a decline equivalent to the reduction in levels caused by 10-15 years of aging!³ 

Conversely, ensuring 7 to 9 hours of quality sleep can aid in maintenance of optimal testosterone levels . An observational study of older men found those who slept longer had significantly higher morning testosterone, with sleep duration being an independent predictor of higher total and free testosterone levels⁴. 

The takeaway? Longer, higher quality sleep is associated with maintenance of optimal testosterone levels. While burning the midnight candle sometimes is necessary in our lives, chronic sleep deprivation can lead to suboptimal testosterone and early symptoms. Adopting good sleep hygiene and ensuring a good night’s sleep is key in preventing the age-related decline in testosterone levels as we age. 

Stress Reduction

When men are constantly stressed and producing high levels of cortisol, their testosterone levels can drop dramatically. Cortisol is your body’s built-in alarm system – a stress hormone pumped out by your adrenal glands when you’re in a “fight or flight” mode. It’s beneficial in scenarios when you need to escape danger, or more practically when powering through a brutal workout, but chronic elevations can turn this hormone into a testosterone-killing nightmare⁵. Managing stress is crucial for hormonal balance. 

Chronic stress and elevated cortisol can suppress the testosterone axis, with this being replicated experimentally in studies and indicating that the hormone can directly suppress testicular testosterone production⁶. Large studies have examined the testosterone-lowering effect of cortisol long-term, indicating that chronic stress = low testosterone (and incidentally, heart disease) ^6,7,8. Managing stress should be part of every man’s attempt at preserving their natural testosterone. Techniques such as meditation, yoga, therapy, or relaxation exercises may help by cutting chronic cortisol output⁹. 

Diet Composition and Macronutrients

The food that you put into your body also plays a significant role in testosterone production. Key dietary factors include fat intake, carbohydrate availability, and protein balance. Clinical interventions and meta-analyses have identified several nutritional patterns that influence total and free testosterone. 

Moderate-to-high fat diets tend to support higher testosterone, whereas low-fat diets can reduce it. In one study, men consumed a high-fat (40% fat) diet and a low-fat (20% fat) diet for 6 weeks each. On the low-fat diet, total and free testosterone dropped by almost 10–15%, and when they reverted to a moderate to higher fat intake they rose back¹⁰. A recent systematic review confirmed that low-fat diets cause small but significant reductions in testosterone, with men having European ancestry having larger reductions ¹¹. The type of fat also matters – unsaturated fats from foods such as eggs, nuts, avocados, and fish are preferable to saturated fats or trans fats. 

Sufficient carb intake is also important for testosterone modulation, especially for active individuals. Very low-carb diets (such as the ketogenic diet, with <5% of calories) can increase cortisol and have been observed to reduce testosterone. One experiment showed that cutting carbs to near-zero caused a significant drop in total testosterone¹². On the flip side, higher refined carbohydrate intake can result in insulin resistance, which in turn can lower sex-hormone binding globulin, a protein that when low may signal metabolic issues¹². The sweet spot? A balanced carbohydrate diet avoiding refined carbohydrates (such as bread, pasta, cereal, etc.) and higher in whole grains, starchy vegetables, and fruit. 

While protein is vital for muscle, very high-protein intakes may negatively impact T if they replace other macronutrients. In the study mentioned above, men on a protein-heavy diet (≥35% of calories) had lower T than when they ate a higher-carb diet . A recent review noted that diets providing >1.6 g protein per kg (or >30% of energy) tended to slightly reduce testosterone compared to more balanced diets . The likely reason is that extremely high protein often means lower carbs or fats, which, as noted, can alter testosterone metabolism. In general, moderation is best: ensure sufficient protein for muscle building, but avoid ultra high-protein/low-carb extremes if optimizing testosterone and building muscle is your goal. 

Seem complicated? Here’s the takeaway:

Balance is key. Most of us are out of our prime athletic years, so straying unnecessarily in any direction mostly will not be beneficial. Healthy fats, moderate carbohydrate intake avoiding processed and refined carbohydrates, and moderate protein intake. Consistent dietary choices that support recovery from exercise, improve body composition, and maintain energy levels and satiety throughout the day will benefit your testosterone much more than any diet trend or crash diet. 

Conclusion

Multiple placebo-controlled studies and meta-analyses affirm that a holistic approach can enhance testosterone levels naturally. Regular resistance exercise, combined with weight loss if overweight, can significantly improve your hormonal profile. Prioritizing sleep with 7 to 9 hours of quality sleep prevents the drops in testosterone seen with sleep debt. Managing stress through psychological or behavioral interventions lowers cortisol and has been shown to raise free testosterone. And lastly, an optimal diet creates a hormonal environment that favors higher testosterone numbers. Individually, each strategy provides a mild to modest bump in the positive direction to raise testosterone levels naturally, and together they can act to synergistically optimize testosterone levels. Supplements can also help to modestly improve your numbers, but that is a whole different article. 

Always consult clinical guidance when implementing these changes. If you have optimized exercise, sleep, stress, and nutrition but still struggle to see your testosterone improve, Renew Medical is here to help. Alongside advanced clinical therapies, Renew Medical will also provide you with the help you may need dialing in your nutrition by working with the great nutritional team we partner with at NutriGreene (https://www.nutrigreene.com/) or by speaking with our men’s health experts to nail down an exercise regimen. Give Renew Medical a call or book a consultation directly through our website. 

References

1. Riachy R et al., J Funct Morphol Kinesiol (2020) – Various Factors May Modulate the Effect of Exercise on Testosterone Levels in Men
2. Hackney, Anthony & Hooper, David , Physiology international (2019) – Low testosterone: Androgen deficiency, endurance exercise training, and competitive performance.
3. Leproult & Van Cauter, JAMA (2011) – Sleep restriction lowering T in young men
4. Penev, Sleep (2007) – Association of longer sleep with higher morning T
5. Zueger et al., Stress (2023) – Testosterone and cortisol responses to acute and prolonged stress during officer training school
6. Cumming, D C et al., Clin Endocrinology Metabolism (1983) – Acute suppression of circulating testosterone levels by cortisol in men.
7. Miller, Chen & Zhou (2007) – The interaction of testosterone and cortisol is associated with attained status in male executives.
8. AHA Circulation (2005) – Cortisol, Testosterone, and Coronary Heart Disease: Prospective evidence from the Caerphilly study. 
9. Cruess et al., Health Psychol (2000) – Stress management raising free T in men 
10. Hämäläinen et al., J Clin Endocrinol Metab (1984) – Low-fat high-fiber diet reducing testosterone
11. Whittaker et al., J Steroid Biochem Mol Biol (2021) – Meta-analysis on low-fat diets and testosterone
12. Hu et al., Nutrients (2018) – Testosterone-associated dietary pattern predicts low testosterone levels and hypogonadism.