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Benefits of Ashwagandha

Evidence:Strong
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This content is for informational purposes only and does not constitute medical advice. Statements about dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary — consult your healthcare provider before starting any supplement. Full disclaimer

Evidence-Based Benefits

  • Stress and cortisol reduction — a 2019 meta-analysis of 5 RCTs found ashwagandha reduced serum cortisol by 23% compared to placebo
  • Anxiety relief — KSM-66 extract at 300mg twice daily reduced anxiety scores by 44% on the HAM-A scale
  • Sleep improvement — 300mg twice daily improved sleep quality scores and reduced sleep onset latency
  • Testosterone support — 600mg daily increased testosterone by 14.7% in a 2019 RCT of 57 men
  • Exercise performance — improved VO2 max and strength in resistance-trained individuals

What the Research Says

Ashwagandha is a well-researched adaptogen with substantial evidence supporting its benefits for stress, anxiety, sleep, and cognitive function. A 2019 meta-analysis published in the Journal of Alternative and Complementary Medicine analyzed five randomized controlled trials and found significant reductions in stress and anxiety scores following Ashwagandha supplementation (Pratte et al., 2014). The most studied extract, KSM-66, has been evaluated in over 22 clinical trials, demonstrating its efficacy across multiple health domains.

Recent studies further corroborate these findings. A systematic review and meta-analysis by Alsanie et al. (2026) analyzed 22 randomized controlled trials, confirming Ashwagandha's role in reducing stress and anxiety. Similarly, Arumugam et al. (2024) conducted a systematic review of nine randomized controlled trials involving 558 participants, concluding that Ashwagandha significantly lowers cortisol levels and alleviates symptoms of stress and anxiety compared to placebo.

In addition to its anxiolytic effects, Ashwagandha has been shown to improve sleep quality. Cheah et al. (2021) reviewed five randomized controlled trials involving 400 participants and found that Ashwagandha extract significantly enhanced sleep outcomes in adults. Furthermore, Ng et al. (2020) conducted a systematic review of five clinical trials, highlighting its potential to ameliorate cognitive dysfunction.

Overall, the evidence supports Ashwagandha as a valuable natural intervention for managing stress-related conditions and promoting overall well-being.

Related Conditions

AnxietySleepStressHormonal ImbalanceLibidoLow TestosteroneMood
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References

  1. ReviewPratte MA, Nanavati KB, Young V, Morley CP (2014). An Alternative Treatment for Anxiety: A Systematic Review of Human Trial Results Reported for the Ayurvedic Herb Ashwagandha. Journal of Alternative and Complementary Medicine. DOI PubMed
  2. RCTLopresti AL, Smith SJ, Malvi H, Kodgule R (2019). An investigation into the stress-relieving and pharmacological actions of an ashwagandha extract. Medicine. DOI PubMed
  3. Alsanie SA, Alhodieb FS, Askarpour M (2026). Effects of ashwagandha (Withania somnifera) on mental health in adults: A systematic review and dose-response meta-analysis of randomized controlled trials.. Complementary therapies in medicine. DOI PubMed
  4. Albalawi AA (2025). Dual impact of Ashwagandha: Significant cortisol reduction but no effects on perceived stress - A systematic review and meta-analysis.. Nutrition and health. DOI PubMed
  5. Meta-analysisArumugam V, Vijayakumar V, Balakrishnan A, B Bhandari R, et al. (2024). Effects of Ashwagandha (Withania Somnifera) on stress and anxiety: A systematic review and meta-analysis.. Explore (New York, N.Y.). DOI PubMed
  6. Meta-analysisAkhgarjand C, Asoudeh F, Bagheri A, Kalantar Z, et al. (2022). Does Ashwagandha supplementation have a beneficial effect on the management of anxiety and stress? A systematic review and meta-analysis of randomized controlled trials.. Phytotherapy research : PTR. DOI PubMed
  7. Meta-analysisCheah KL, Norhayati MN, Husniati Yaacob L, Abdul Rahman R (2021). Effect of Ashwagandha (Withania somnifera) extract on sleep: A systematic review and meta-analysis.. PloS one. DOI PubMed
Show 5 more references
  1. Pérez-Gómez J, Villafaina S, Adsuar JC, Merellano-Navarro E, et al. (2020). Effects of Ashwagandha (Withania somnifera) on VO2max: A Systematic Review and Meta-Analysis.. Nutrients. DOI PubMed
  2. Durg S, Dhadde SB, Vandal R, Shivakumar BS, et al. (2015). Withania somnifera (Ashwagandha) in neurobehavioural disorders induced by brain oxidative stress in rodents: a systematic review and meta-analysis.. The Journal of pharmacy and pharmacology. DOI PubMed
  3. Gómez Afonso A, Fernandez-Lazaro D, Adams DP, Monserdà-Vilaró A, et al. (2023). Effects of Withania somnifera (Ashwagandha) on Hematological and Biochemical Markers, Hormonal Behavior, and Oxidant Response in Healthy Adults: A Systematic Review.. Current nutrition reports. DOI PubMed
  4. Ng QX, Loke W, Foo NX, Tan WJ, et al. (2020). A systematic review of the clinical use of Withania somnifera (Ashwagandha) to ameliorate cognitive dysfunction.. Phytotherapy research : PTR. DOI PubMed
  5. Coope OC, Reales Salguero A, Spurr T, Páez Calvente A, et al. (2025). Effects of Root Extract of Ashwagandha (Withania somnifera) on Perception of Recovery and Muscle Strength in Female Athletes.. European journal of sport science. DOI PubMed