Testosterone levels naturally peak in adolescence and early adulthood, then begin a gradual decline, typically declining by about 1% per year after age 30. However, according to experts at Ben’s Natural Health, many popular diets may be speeding up the decline, compromising energy, muscle mass, and long-term male vitality.
To better understand this hidden risk, the researchers at Ben’s developed a metric, Androgen Load (AL), a simplified score from 0 to 100 that estimates how much a diet interferes with male hormonal health. A higher AL score signals greater potential for T-level disruption.
The score is built from five factors:
- Fat Intake (since cholesterol is required for primary male hormone synthesis),
- Protein Sufficiency (to maintain muscle and anabolic signaling),
- Micronutrient Density (especially zinc, selenium, B12, and vitamin D),
- Inflammatory and Gut Impact (because gut health and inflammation affect hormonal balance), and
- Metabolic Stress (such as extreme fasting or chronic cortisol elevation).
1. Juice Cleanse – AL: 89
Juice-only diets eliminate protein, fats, and vital micronutrients like zinc and cholesterol, core materials for testosterone.
“You can’t detox your way into hormone health,” says a Ben’s Natural Health advisor. “Juice fasts starve your endocrine system.”
A 2020 endocrinology study found that testosterone production drops 85% when steroid pathways are disrupted, similar to extreme dietary restriction.
2. Carnivore Diet – AL: 84
Meat-only diets are high in saturated fat and protein but eliminate fiber, a critical mistake. Low fiber intake disrupts gut bacteria, weakens immunity, and fuels inflammation. Without plant fiber, the body can’t produce SCFAs, which protect the gut and regulate immune function. Key nutrients like vitamin C, magnesium, and antioxidants are also missing, reducing hormonal resilience over time.
“You’re giving your body fuel but cutting out the brakes, the balance, and the system that processes it,” says a Ben’s expert.
3. Unplanned Vegan – AL: 82
Poorly planned vegan diets can lack zinc, selenium, omega-3s, B12, and iron — all vital for T levels and energy. Many men also fall short on protein and healthy fats, adding to the hormonal strain. A 2021 meta-analysis found that low-fat diets reduce testosterone, highlighting the need for balanced fat intake.
“It’s not the plants — it’s the planning,” says a Ben’s nutritionist. “Done wrong, veganism becomes a slow hormonal drain.”
4. Intermittent Fasting (OMAD) – AL: 76
OMAD, or One Meal a Day, pushes the body into a high-stress state, spiking cortisol, lowering sleep quality, and suppressing T-level production. In one clinical trial, alternate-day fasting (with similar stress load) resulted in a 17.4% drop in reproductive hormone levels after just three weeks.
Because cortisol and stress share an inverse relationship, this elevated stress hormone directly undermines anabolic and reproductive function.
5. Keto (Poorly Balanced) – AL: 70
When done right, keto can improve blood sugar and insulin sensitivity. But many men overload on saturated fats while skipping fiber, veggies, and omega-3s. A 2020 study found that men on high saturated fat diets had 15% lower testosterone. Missing nutrients like magnesium, selenium, and vitamin D also raise inflammation and hormonal stress.
“Done well, keto works,” says a Ben’s spokesperson. “Done like a bacon buffet, it burns out your hormonal balance.”
Maintaining Healthy Testosterone Levels
To maintain healthy testosterone levels, men should focus on a combination of lifestyle adjustments, including exercise, diet, sleep, and stress management, and potentially consider medical interventions if necessary. Regular exercise, especially strength training, a balanced diet rich in zinc and vitamin D, and adequate sleep are key to optimizing testosterone production naturally.
Here’s a more detailed breakdown:
1. Exercise:
- Strength Training: Lifting weights and bodyweight exercises can significantly boost testosterone levels, particularly in older men, according to Houston Methodist.
- High-Intensity Interval Training (HIIT): HIIT workouts are time-efficient and can be incorporated into various activities like cycling, sprinting, or bodyweight circuits.
- Cardio: Moderate-intensity cardio, such as jogging or swimming, can help with weight management and heart health, which indirectly supports healthy testosterone levels.
- Overtraining: It’s important to find the right balance and avoid overtraining, as excessive exercise can lead to decreased testosterone, says Northwestern Medicine.
2. Diet:
- Zinc: Zinc is crucial for testosterone production. Good sources include oysters, beef, beans, and fortified breakfast cereals.
- Vitamin D: Vitamin D deficiency is linked to lower testosterone levels, so ensure adequate sun exposure or consider supplementation if needed.
- Healthy Fats: Consume healthy fats found in foods like avocados, nuts, and olive oil, as they are essential for hormone production.
- Limit Sugar and Processed Foods: Excessive sugar and processed foods can negatively impact testosterone levels.
3. Sleep:
- Prioritize Sleep: Aim for 7-9 hours of quality sleep per night. Sleep deprivation can lead to lower testosterone levels, says Labcorp OnDemand.
- Improve Sleep Hygiene: Establish a regular sleep schedule, create a relaxing bedtime routine, and limit exposure to screens and caffeine before bed.
4. Stress Management:
- Reduce Stress: Chronic stress can elevate cortisol levels, which can negatively impact testosterone. Practice stress-reducing techniques like meditation, yoga, or spending time in nature.
5. Other Factors:
- Maintain a Healthy Weight: Obesity is linked to lower testosterone levels.
- Avoid Smoking and Excessive Alcohol: Smoking and excessive alcohol consumption can negatively affect testosterone production.
- Consider Testosterone Replacement Therapy (TRT): If lifestyle changes are not sufficient, talk to your doctor about TRT options, such as injections, gels, patches, or pellets, according to Harvard Health.
Before pursuing TRT, a clinically dosed testosterone booster like Mars Men offers a natural, research-backed option for men looking to restore hormone balance without clinical intervention.
Important Note: If you are concerned about low testosterone levels, it’s essential to consult with a healthcare professional for proper diagnosis and treatment.
This article was created at the WHN News Desk using some of the information provided by Dottie Price on behalf of Ben’s Natural Health, believing that you should not compromise when it comes to your health, working to formulate high-quality, scientifically proven, and clinically effective supplements to support health and quality of life.
As with anything you read on the internet, this article should not be construed as medical advice; please talk to your doctor or primary care provider before changing your wellness routine. WHN neither agrees nor disagrees with any of the materials posted. This article is not intended to provide a medical diagnosis, recommendation, treatment, or endorsement.
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