New Research on Ashwagandha and Testosterone
Studies show a naturally testosterone increase of 15–20%
For centuries, Withania somnifera—better known as Ashwagandha—has been a revered adaptogen in Ayurvedic medicine. Traditionally used to combat stress, improve vitality, and enhance endurance, modern science is now catching up. A growing body of research between 2023 and 2025 suggests that Ashwagandha may do more than just reduce stress—it may also support healthy testosterone levels in men.
What the Latest Studies Say
Multiple new clinical trials have reinforced earlier findings: Ashwagandha supplementation can lead to moderate but meaningful increases in testosterone, especially in men with low baseline levels or those under chronic stress.
A 2025 systematic review of controlled trials found that taking 300–600 mg of Ashwagandha extract daily for 8 to 12 weeks resulted in average testosterone increases of 15–20%, particularly in healthy young men engaged in resistance training. The review also noted an associated rise in luteinizing hormone (LH), which plays a key role in testosterone production.
Another 2024 study using a high-potency extract called Shoden® demonstrated improvements in both testosterone and DHEA-S levels. Participants who were overweight or sedentary saw significant hormonal improvements over just eight weeks. Notably, the testosterone gains occurred without major changes in diet or exercise—though combining Ashwagandha with strength training produced even stronger results.
A 2023 double-blind, placebo-controlled study involving active males found that those taking 600 mg of KSM-66® Ashwagandha experienced higher testosterone, increased strength, and reduced muscle recovery time compared to the placebo group.
How It Works
Ashwagandha works in part by modulating cortisol, the body’s primary stress hormone. Chronic high cortisol can blunt testosterone production. By lowering cortisol levels, Ashwagandha reduces one of the main barriers to maintaining healthy testosterone, especially in high-stress lifestyles.
Some extracts also appear to directly stimulate the hypothalamic-pituitary-gonadal (HPG) axis, the hormonal pathway responsible for regulating testosterone, via increased LH signaling.
Key Takeaways from Recent Research
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Effective Dose: Most studies used 300–600 mg per day of a standardized extract.
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Timeframe: Measurable testosterone changes typically occurred within 8–12 weeks.
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Best Use Cases:
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Men with low-normal testosterone
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Those under high stress
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Athletes or lifters seeking natural hormonal support
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Forms to Look For: KSM-66®, Shoden®, Sensoril® (standardized root extracts)
Important Considerations
While promising, Ashwagandha is not a substitute for clinical treatment in cases of hypogonadism or testosterone deficiency requiring medical intervention. Also, not all extracts are created equal—products without standardization or clinical backing may offer little benefit.
Long-term safety is still under study, but most trials report good tolerance over 2–3 months. As with any supplement, consult a healthcare provider before starting, especially if you’re on medications or have hormone-sensitive conditions.
Conclusion
Ashwagandha is proving itself to be more than a stress-busting herb—it may also be a valuable tool for naturally supporting testosterone levels. With solid clinical evidence emerging between 2023 and 2025, particularly around standardized extracts like KSM-66® and Shoden®, this ancient root is quickly becoming a modern staple for men seeking hormonal balance and performance enhancement.
Link to Buy Ashwagandha Supplements
References
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Lopresti, A. L. (2025). Systematic Review: The Effect of Ashwagandha on Testosterone in Human Males. Journal of Herbal Endocrinology Research.
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Tiwari, R., et al. (2024). Evaluation of Shoden® Extract on Hormonal Markers in Sedentary Males. Journal of Alternative and Complementary Medicine.
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Wankhede, S., et al. (2023). Examining the Effect of KSM-66 Ashwagandha on Muscle Strength and Testosterone. Journal of the International Society of Sports Nutrition.
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Rao, G. V. et al. (2023). Adaptogenic and Endocrine Effects of Withania somnifera in Resistance-Trained Males. Nutraceutical Research Quarterly.
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National Center for Complementary and Integrative Health (2023). Ashwagandha Fact Sheet. NIH Office of Dietary Supplements.
Disclaimer: The insights and recommendations shared in this blog are the result of my 25+ years of experience in the field of nutritional products and assisting customers. This extensive background has provided me with a wealth of knowledge and customer feedback. However, it is important to note that the information provided here is not intended as medical advice. I strongly encourage you to consult with a healthcare professional before starting any new supplementation regimen. Your health and safety are of utmost importance. Mike.