Ashwagandha for Hormone Balance After 40: What the Research Shows

Written by Dr. Sarah Mitchell, RD, PhD, Registered Dietitian & Nutritional Scientist

Medically Reviewed by Dr. James Chen, MD, Board-Certified Internal Medicine Physician

Last updated: March 2026 • Evidence-based content

Women over 40 often face hormonal shifts, causing hot flashes and mood swings [1, 2]. Ashwagandha, an adaptogenic herb, can help balance hormones, impacting menopausal symptoms, stress, and thyroid function.

Understanding Hormone Changes After 40

Perimenopause involves declining estrogen and progesterone [3], leading to irregular periods, hot flashes, and mood changes [4, 5]. Stress and thyroid hormones also contribute [7]. Effective management is vital.

Ashwagandha: An Ancient Adaptogen

Ashwagandha, "Indian Ginseng," is an Ayurvedic adaptogen [8]. Its withanolides help manage stress and maintain balance, addressing hormonal changes in women over 40.

Ashwagandha and Menopausal Symptoms

Ashwagandha alleviates menopausal symptoms. A *Frontiers in Reproductive Health* study showed Ashwagandha root extract significantly reduced MRS scores, improved estradiol and progesterone, and lessened hot flashes in women aged 45–55 [9]. It also aids sleep, reduces stress, and improves mood [10, 11].

Ashwagandha's Impact on Cortisol and Stress

Chronic stress elevates cortisol, disrupting hormones and worsening menopausal symptoms [12]. Ashwagandha, an adaptogen, reduces cortisol and perceived stress [13], supporting hormone balance and easing anxiety, fatigue, and sleep issues in women over 40 [14, 15].

Ashwagandha and Thyroid Health

Thyroid function impacts metabolism, energy, and mood. Ashwagandha may improve thyroid function, especially in subclinical hypothyroidism, by normalizing T3/T4 and reducing TSH [16], partly due to stress reduction [17]. Optimal thyroid health is crucial for women over 40 to manage weight, energy, and cognition. Hyperthyroid individuals should consult a doctor [18].

How to Incorporate Ashwagandha

For women over 40, safe Ashwagandha incorporation is vital. Dosages (typically 300-600 mg standardized extract, once or twice daily [19]) depend on product and individual needs. Start low and consult a healthcare professional, especially with existing conditions or other medications.

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Potential Side Effects and Considerations

Ashwagandha is generally safe, but watch for mild side effects like stomach upset or drowsiness at higher doses [20]. It may interact with immunosuppressants, sedatives, and thyroid hormones. Pregnant/breastfeeding women, those with autoimmune diseases, or hyperthyroidism should consult a doctor [21]. Always seek medical advice for pre-existing conditions or other medications.

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Conclusion

Ashwagandha offers a natural solution for women over 40 managing hormonal changes. Research shows its potential to ease menopausal symptoms, lower stress-related cortisol, and support thyroid function. As an adaptogen, it promotes balance and resilience. Informed caution, professional consultation, and adherence to dosages are crucial for safe and effective integration.

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References

  1. Nelson, H. D. (2008). Menopause. Lancet, 371(9614), 760–770. [PubMed]
  2. Mashiloane, C. D., Bagratee, J., & Moodley, J. (2002). Awareness of and attitudes toward menopause and hormone replacement therapy in an African community. International Journal of Gynaecology and Obstetrics, 76(1), 91–93. [PubMed]
  3. Cobin, R. H., Futterweit, W., Ginzburg, S. B., Goodman, N. F., Kleerekoper, M., Licata, A. A., et al. (2006). American Association of Clinical Endocrinologists medical guidelines for clinical practice for the diagnosis and treatment of menopause. Endocrine Practice, 12(3), 315–337. [PubMed]
  4. Davis, S. R., Pinkerton, J., Santoro, N., & Simoncini, T. (2023). Menopause—biology, consequences, supportive care, and therapeutic options. Cell, 186(19), 4038–4058. [PubMed]
  5. Martin, K. A., & Manson, J. E. (2008). Approach to the patient with menopausal symptoms. Journal of Clinical Endocrinology & Metabolism, 93(12), 4567–4575. [PubMed]
  6. Heinemann, K., Ruebig, A., Potthoff, P., Schneider, H. P., Strelow, F., & Heinemann, L. A. (2004). The Menopause Rating Scale (MRS) scale: a methodological review. Health and Quality of Life Outcomes, 2, 45. [PubMed]
  7. Thurston, R. C., & Joffe, H. (2011). Vasomotor symptoms and menopause: findings from the study of women’s health across the nation. Obstetrics and Gynecology Clinics of North America, 38(3), 489–501. [PubMed]
  8. Mishra, L. C., Singh, B. B., & Dagenais, S. (2000). Scientific basis for the therapeutic use of Withania somnifera (ashwagandha): a review. Alternative Medicine Review, 5(4), 334–346. [PubMed]
  9. Vani, I., Muralidhar, G., & Rao, B. S. (2026). A prospective, randomized, double-blind, placebo-controlled study on efficacy and safety of Ashwagandha root extract (Withania somnifera) for managing menopausal symptoms in women. Frontiers in Reproductive Health, 7, 1647721. [Frontiers]
  10. Gopal, S., Ajgaonkar, A., Kanchi, P., Kaundinya, A., Thakare, V., Chauhan, S., et al. (2021). Effect of an ashwagandha (Withania Somnifera) root extract on climacteric symptoms in women during perimenopause: a randomized, double-blind, placebo-controlled study. Journal of Obstetrics and Gynaecology Research, 47(12), 4414–4425. [PubMed]
  11. Mikulska, P., Malinowska, M., Ignacyk, M., Szustowski, P., Nowak, J., Pesta, K., et al. (2023). Ashwagandha (Withania somnifera)—current research on the health-promoting activities: a narrative review. Pharmaceutics, 15(4), 1057. [PubMed]
  12. Paul, S., Chakraborty, S., Anand, U., Dey, S., Nandy, S., Ghorai, M., ... & Pandey, D. K. (2021). Withania somnifera (L.) Dunal (Ashwagandha): A comprehensive review on its ethnopharmacology, pharmacology, and clinical aspects. Journal of Ethnopharmacology, 276, 114177. [PubMed]
  13. Chandrasekhar, K., Kapoor, J., & Anishetty, S. (2012). A prospective, randomized double-blind, placebo-controlled study of safety and efficacy of a high-concentration full-spectrum extract of ashwagandha root in reducing stress and anxiety in adults. Indian Journal of Psychological Medicine, 34(3), 255–262. [PubMed]
  14. Salve, J., Pate, S., Debnath, K., & Langade, D. (2019). Adaptogenic and anxiolytic effects of ashwagandha root extract in healthy adults: a double-blind, randomized, placebo-controlled clinical study. Cureus, 11(12), e6466. [PubMed]
  15. Lopresti, A. L., Smith, S. J., Malvi, H., & Kodgule, R. (2019). An investigation into the stress-relieving and pharmacological actions of an ashwagandha (Withania somnifera) extract: a randomized, double-blind, placebo-controlled study. Medicine, 98(37), e17186. [PubMed]
  16. Sharma, A. K., Basu, I., & Singh, S. (2018). Efficacy and safety of ashwagandha root extract in subclinical hypothyroid patients: a double-blind, randomized placebo-controlled trial. Journal of Alternative and Complementary Medicine, 24(3), 243–248. [PubMed]
  17. Gannon, J. M., Forrest, P. E., & Roy Chengappa, K. N. (2014). Subtle changes in thyroid indices during a placebo-controlled study of an extract of Withania somnifera in persons with bipolar disorder. Journal of Ayurveda and Integrative Medicine, 5(4), 241–245. [PubMed]
  18. van der Hooft, C. S., de Vries, J., van den Berg, S. J., & van der Heide, W. K. (2005). Thyrotoxicosis following the use of ashwagandha. Nederlands Tijdschrift voor Geneeskunde, 149(47), 2637–2638. [PubMed]
  19. Bonilla, D. A., Moreno, Y., Gho, C., Petro, J. L., Odriozola-Martínez, A., & Kreider, R. B. (2021). Effects of Ashwagandha (Withania somnifera) on physical performance: systematic review and bayesian meta-analysis. Journal of Functional Morphology and Kinesiology, 6(1), 20. [PubMed]
  20. Tandon, N., & Yadav, S. S. (2020). Safety and clinical effectiveness of Withania Somnifera (Linn.) Dunal root in human ailments. Journal of Ethnopharmacology, 255, 112768. [PubMed]
  21. Pérez-Gómez, J., Villafaina, S., Adsuar, J. C., Merellano-Navarro, E., & Collado-Mateo, D. (2020). Effects of Ashwagandha (Withania somnifera) on VO2max: a systematic review and meta-analysis. Nutrients, 12(4), 1119. [PubMed]

Frequently Asked Questions

What is Ashwagandha and how does it help with hormone balance?

Ashwagandha (Withania somnifera) is an adaptogenic herb used in Ayurvedic medicine. It helps the body adapt to stress and maintain hormonal balance by reducing cortisol levels, supporting thyroid function, and potentially alleviating menopausal symptoms like hot flashes and mood swings.

Is Ashwagandha safe for women over 40?

Ashwagandha is generally considered safe for most women over 40. However, it can interact with certain medications and may not be suitable for pregnant or breastfeeding women, or individuals with hyperthyroidism or autoimmune diseases. Always consult a healthcare professional before starting any new supplement.

How long does it take for Ashwagandha to work for hormone balance?

The effects of Ashwagandha can vary among individuals. Some studies show improvements in stress and menopausal symptoms within 4-8 weeks of consistent use. It is recommended to take Ashwagandha for at least a few weeks to assess its benefits.

Can Ashwagandha help with thyroid issues after 40?

Some research suggests Ashwagandha may help normalize thyroid hormone levels, particularly in cases of subclinical hypothyroidism, by reducing stress and cortisol. However, if you have a diagnosed thyroid condition, it is crucial to consult your doctor before using Ashwagandha.