How to Raise Testosterone Naturally: 10 Science-Backed Ways to Support Healthy Testosterone Levels
Testosterone is one of the body's most important hormones. It plays a critical role in muscle growth, strength, energy, bone health, mood, libido, sperm production, and overall well-being. While it's normal for testosterone levels to gradually decline with age, many lifestyle factors can also contribute to lower levels.
The internet is full of products claiming to "boost testosterone overnight," but the truth is that there is no miracle supplement. The strongest evidence supports a combination of healthy lifestyle habits, correcting nutrient deficiencies, and, in some cases, targeted supplementation.
This guide reviews the latest scientific evidence on how to naturally support healthy testosterone levels, and which supplements are actually worth considering.
What Does Testosterone Do?
Although testosterone is often associated with masculinity, it performs many essential functions throughout the body.
Healthy testosterone levels help support:
- Muscle mass and strength
- Bone density
- Libido and sexual function
- Sperm production
- Red blood cell production
- Energy levels
- Mood and motivation
- Cognitive function
- Healthy body composition
Testosterone naturally peaks during early adulthood and gradually declines with age, typically by about 1–2% per year after age 30–40. However, obesity, chronic illness, poor sleep, medications, and stress can accelerate this decline. (Endocrine)
Signs of Low Testosterone
Symptoms of low testosterone may include:
- Low libido
- Erectile dysfunction
- Fatigue
- Reduced muscle mass
- Increased body fat
- Decreased strength
- Low mood
- Difficulty concentrating
- Reduced motivation
- Decreased beard or body hair
- Reduced fertility
These symptoms are not specific to testosterone deficiency and can also result from thyroid disease, depression, sleep apnea, nutrient deficiencies, medications, or chronic stress. This is why proper testing is important before assuming testosterone is the cause. (Endocrine)
What Causes Low Testosterone?
Many factors influence testosterone production, including:
- Aging
- Obesity
- Poor sleep
- Chronic stress
- Type 2 diabetes
- Excessive alcohol intake
- Smoking
- Certain medications (especially opioids and corticosteroids)
- Vitamin D deficiency
- Zinc deficiency
- Untreated sleep apnea
- Overtraining
- Severe calorie restriction
Fortunately, many of these are modifiable.
1. Lose Excess Body Fat
Best evidence: ★★★★★
One of the most effective natural ways to improve testosterone is achieving and maintaining a healthy body weight.
Fat tissue contains the enzyme aromatase, which converts testosterone into estrogen. Excess body fat—particularly abdominal fat—also increases inflammation and insulin resistance, both of which can negatively affect hormone production.
Clinical studies consistently show that weight loss in overweight men is associated with increases in testosterone, particularly when substantial body fat is lost. The Endocrine Society also recommends weight loss as the first-line approach for men with obesity-related low testosterone before considering testosterone therapy. (Endocrine)
Tips
- Aim for gradual fat loss.
- Prioritize resistance training.
- Eat sufficient protein.
- Avoid crash diets.
2. Lift Weights Regularly
Best evidence: ★★★★★
Resistance training is one of the best lifestyle habits for supporting healthy testosterone.
Heavy compound exercises such as:
- Squats
- Deadlifts
- Bench press
- Rows
- Overhead press
produce temporary increases in testosterone after exercise and help preserve muscle mass over time.
While these hormonal spikes are short-lived, consistent strength training improves body composition and metabolic health, which indirectly supports healthy testosterone production.
Aim for:
- 3–5 resistance training sessions per week
- Progressive overload
- Recovery between workouts
Avoid excessive overtraining without adequate recovery, as prolonged intense endurance exercise may lower testosterone in some individuals.
3. Prioritize Sleep
Best evidence: ★★★★★
Sleep is arguably one of the most powerful natural testosterone boosters.
Most testosterone production occurs during sleep, particularly during deep sleep.
In one well-known clinical study, healthy young men restricted to 5 hours of sleep per night for one week experienced a 10–15% reduction in daytime testosterone levels.
Adults should aim for:
- 7–9 hours of sleep
- Consistent bedtime
- Dark, cool bedroom
- Limiting screens before bed
Treating sleep disorders such as obstructive sleep apnea may also improve testosterone in affected individuals. (Endocrine)
4. Correct Vitamin D Deficiency
Best evidence: ★★★★☆
Vitamin D functions more like a hormone than a vitamin and plays an important role in reproductive health.
Observational studies consistently show that men with low vitamin D levels tend to have lower testosterone.
Some supplementation studies suggest correcting vitamin D deficiency may improve testosterone, particularly in deficient individuals, although results across trials have been mixed.
Rather than taking high-dose vitamin D indiscriminately, it's best to identify and correct a true deficiency. Current clinical guidelines do not recommend vitamin D supplementation solely to raise testosterone in otherwise healthy adults.
How much vitamin D should you take?
The Recommended Dietary Allowance (RDA) for most adults is 600–800 IU (15–20 mcg) daily. However, if blood work confirms a deficiency, healthcare providers commonly recommend 1,000–2,000 IU (25–50 mcg) of vitamin D3 daily to restore and maintain healthy levels. Some individuals with significant deficiencies may require higher doses for a short period under medical supervision.
The tolerable upper intake level for healthy adults is 4,000 IU (100 mcg) per day unless otherwise directed by a healthcare professional.
Food sources of vitamin D
- Salmon
- Sardines
- Egg yolks
- Fortified milk
- Fortified plant-based beverages
5. Make Sure You're Getting Enough Zinc
Best evidence: ★★★★☆
Zinc is essential for normal testosterone production and sperm development.
Men who are zinc deficient often experience reduced testosterone levels.
Research suggests supplementation primarily benefits those who are actually deficient rather than men with adequate zinc intake.
How much zinc should you take?
The Recommended Dietary Allowance (RDA) for adult men is 11 mg daily.
Clinical studies investigating testosterone and male fertility have commonly used 15–30 mg of elemental zinc per day, particularly in individuals with low zinc status.
Long-term supplementation above 40 mg daily is generally not recommended unless prescribed by a healthcare provider, as excessive zinc intake may interfere with copper absorption and lead to deficiency.
Foods rich in zinc include:
- Oysters
- Beef
- Pumpkin seeds
- Chickpeas
- Lentils
- Cashews
6. Get Enough Magnesium
Best evidence: ★★★☆☆
Magnesium is involved in over 300 enzymatic reactions throughout the body, including muscle function, energy production, and hormone regulation.
Some studies suggest magnesium supplementation may modestly improve testosterone in physically active individuals or those with low magnesium status.
How much magnesium should you take?
The Recommended Dietary Allowance (RDA) for adult men is 400–420 mg daily.
Clinical studies have generally used 200–400 mg of elemental magnesium per day.
When choosing a supplement:
- Magnesium glycinate is well absorbed and gentle on the stomach.
- Magnesium citrate may be a better choice if constipation is also present.
- Magnesium oxide is less well absorbed and is primarily used as a laxative.
Although the upper intake level for magnesium from supplements is 350 mg daily, healthcare providers may recommend higher doses when appropriate.
Magnesium-rich foods include:
- Pumpkin seeds
- Spinach
- Almonds
- Cashews
- Black beans
- Dark chocolate
7. Manage Chronic Stress
Best evidence: ★★★★☆
Stress increases production of cortisol, the body's primary stress hormone.
Chronically elevated cortisol may interfere with testosterone production through the hypothalamic-pituitary-gonadal axis.
Stress management strategies include:
- Meditation
- Walking
- Strength training
- Spending time outdoors
- Journaling
- Deep breathing
- Adequate sleep
Managing stress supports overall hormone health, even if it doesn't dramatically increase testosterone by itself.
8. Eat Enough Healthy Fats and Protein
Hormone production requires adequate nutrition.
Very low-calorie diets and prolonged under-eating can reduce testosterone.
Current evidence suggests:
- Adequate protein supports muscle maintenance.
- Healthy fats are important for hormone production.
- Extremely low-fat diets may modestly reduce testosterone in some men. (arXiv)
Focus on:
- Olive oil
- Avocados
- Nuts
- Seeds
- Fatty fish
- Eggs
- Lean protein
9. Consider Ashwagandha
Best evidence: ★★★☆☆
Ashwagandha (Withania somnifera) is one of the most extensively researched herbal supplements for men's health.
Several randomized controlled trials suggest it may:
- Help reduce chronic stress
- Lower cortisol levels
- Improve strength and exercise performance
- Support male fertility
- Produce modest increases in testosterone in some populations
Because chronic stress and elevated cortisol may negatively affect testosterone production, ashwagandha may provide indirect benefits by improving the body's stress response.
How much ashwagandha should you take?
Most clinical studies demonstrating benefits have used:
- 300–600 mg per day of a standardized root extract (typically standardized to at least 5% withanolides)
A common dosing schedule is:
- 300 mg twice daily, or
- 600 mg once daily
Benefits are generally seen after 8–12 weeks of consistent supplementation.
Ashwagandha should be avoided during pregnancy and should be used cautiously in individuals with autoimmune diseases, hyperthyroidism, or those taking sedatives or immunosuppressive medications. Consult your healthcare provider before use if you have any underlying medical conditions.
10. Review Other Supplements Carefully
Not every product marketed as a "testosterone booster" is supported by evidence.
| Supplement | Evidence | Recommendation |
|---|---|---|
| Vitamin D | Moderate (if deficient) | Worth correcting deficiency |
| Zinc | Strong (if deficient) | Recommended if deficient |
| Magnesium | Moderate | Helpful if intake is low |
| Ashwagandha | Moderate | Promising |
| Fenugreek | Mixed | Some benefit reported |
| Tongkat Ali | Emerging | Promising but more research needed |
| DHEA | Mixed | Only under medical supervision |
| Tribulus | Poor | Little evidence for raising testosterone |
Quick Reference: Supplements That May Support Healthy Testosterone
| Supplement | Typical Daily Dose | Who May Benefit |
|---|---|---|
| Vitamin D3 | 1,000–2,000 IU (if deficient) | Individuals with low vitamin D levels confirmed by blood work |
| Zinc | 15–30 mg elemental zinc | Individuals with zinc deficiency or inadequate dietary intake |
| Magnesium | 200–400 mg elemental magnesium | Those with low magnesium intake or physically active individuals |
| Ashwagandha | 300–600 mg standardized extract (≥5% withanolides) | Individuals looking to support stress management and overall hormonal health |
Important: These dosage ranges reflect amounts commonly used in clinical studies and may not be appropriate for everyone. Supplements should not replace medical evaluation for symptoms of low testosterone. Speak with your healthcare provider before starting any new supplement, particularly if you have underlying health conditions, are taking prescription medications, or have confirmed hormone abnormalities.
Supplements That Don't Live Up to the Hype
Many "testosterone boosters" rely on marketing rather than science.
Products with limited or inconsistent evidence include:
- Tribulus terrestris
- Deer antler velvet
- Proprietary testosterone blends
- Excessive D-aspartic acid
- High-dose boron
If a supplement promises to dramatically increase testosterone within days, it's likely too good to be true.
Lifestyle Habits That Can Lower Testosterone
Avoiding these habits may be just as important as adopting healthy ones:
- Chronic sleep deprivation
- Obesity
- Smoking
- Excess alcohol
- Severe calorie restriction
- Overtraining
- Long-term opioid use
- Untreated sleep apnea
Should You Get Your Testosterone Tested?
If you're experiencing persistent symptoms of low testosterone, speak with your healthcare provider.
The Endocrine Society recommends diagnosing hypogonadism only when both symptoms and consistently low morning testosterone levels are present. Testing should be repeated to confirm abnormal results before treatment is considered. (Endocrine)
Your healthcare provider may also investigate:
- Thyroid function
- Iron status
- Vitamin D
- LH and FSH
- Prolactin
- Sleep apnea
- Medication use
Frequently Asked Questions
Can you naturally increase testosterone?
Yes. Weight loss (if overweight), resistance training, adequate sleep, stress management, and correcting nutrient deficiencies can all support healthy testosterone levels.
What food increases testosterone the most?
No single food dramatically raises testosterone. A balanced diet rich in protein, healthy fats, zinc, magnesium, and vitamin D supports hormone production.
Does cardio lower testosterone?
Moderate cardiovascular exercise is beneficial. However, excessive endurance training without adequate recovery may reduce testosterone in some athletes.
Do testosterone boosters work?
Some ingredients, such as ashwagandha or zinc (when deficient), may provide modest benefits. Most commercial "testosterone booster" blends lack strong evidence.
At what age does testosterone begin to decline?
Testosterone generally begins to decline gradually after age 30–40, although the rate varies considerably between individuals.
The Bottom Line
There is no single supplement that dramatically increases testosterone in healthy men. The strongest scientific evidence supports focusing on lifestyle habits first.
If you're looking to naturally support healthy testosterone levels:
- Maintain a healthy body weight
- Lift weights regularly
- Sleep 7–9 hours each night
- Manage chronic stress
- Eat a balanced diet with adequate protein and healthy fats
- Correct deficiencies in vitamin D, zinc, or magnesium if present
- Consider evidence-based supplements such as ashwagandha when appropriate
If you have symptoms of low testosterone, don't rely solely on supplements. A proper medical evaluation and laboratory testing are essential to determine the underlying cause and the most appropriate treatment.
References
- Bhasin S, et al. Testosterone Therapy in Men With Hypogonadism: An Endocrine Society Clinical Practice Guideline. J Clin Endocrinol Metab. 2018. (Endocrine)
- Endocrine Society. Statement on Testosterone Replacement Therapy. 2026. (Endocrine)
- Endocrine Society. Vitamin D for the Prevention of Disease Clinical Practice Guideline. 2024. (Endocrine)
- Pilz S, et al. Effect of vitamin D supplementation on testosterone levels in men. Horm Metab Res. 2011.
- Leproult R, Van Cauter E. Effect of one week of sleep restriction on testosterone levels in healthy young men. JAMA. 2011.
- Grossmann M. Hypogonadism and male obesity. Endocrinol Metab Clin North Am. 2018.
- Kumagai H, et al. Resistance training and testosterone responses: implications for muscle hypertrophy. Sports Medicine. 2020.
- Cinar V, et al. Effects of magnesium supplementation on testosterone levels in athletes and sedentary individuals. Biol Trace Elem Res. 2011.
- Wankhede S, et al. Examining the effect of ashwagandha supplementation on muscle strength and recovery. J Int Soc Sports Nutr. 2015.
- Whittaker J, Wu K. Low-fat diets and testosterone in men: Systematic review and meta-analysis of intervention studies. 2022. (arXiv)