Research Article | DOI: https://doi.org/CCSRR-RA-25-36
Effects of Ashwagandha (Withania Somnifera) on Stress and Anxiety: A Systematic Review
Abstract
Background: Stress is a known causative factor in modulating cognitive health, on which the overall well-being and quality of life are dependent. Long-term stress has shown to disrupt the balance of the hypothalamic–pituitary–adrenal (HPA) axis. Adaptogens, such as Withania somnifera (Ashwagandha), are commonly used in ayurvedic medicine for stress relief and ameliorating HPA-axis dysfunction. Its current research covers many aspects of human health, including neuroprotective, sedative and adaptogenic effects, and effects on sleep. The species name somnifera comes from the Latin word for sleep-inducing, signifying another purported property of this botanical. In addition to sleep, Ashwagandha is commonly promoted for stress and anxiety reduction. Ashwagandha is rich in phytochemicals, including steroidal lactones (known as withanolides) and alkaloids.
Methods: A comprehensive search was conducted in MEDLINE, EMBASE, PubMed, PsychINFO and the Cochrane Library. Randomized controlled trials that examined the effects of Ashwagandha on stress and anxiety were included. Both subjective and objective measures of stress and anxiety were assessed as outcome variables.
Conclusion: The findings from the included studies indicated that Ashwagandha formulations had beneficial effects on stress and axnxiety. The adverse effects associated with Ashwagandha are limited; however, further information is required to determine its safety with long-term administration.
References
-
Naidu S, GR Ratre, Naik S, Anxiety - Unlocking the Dynamics and Management in Ayurveda. J Ayu Int Med Sci. 2024;9(8):196-200.
View at Publisher | View at Google Scholar -
Mills PJ, Peterson CT, Wilson KL, Pung MA, Patel S, Weiss L, Kshirsagar SG, Tanzi RE, Chopra D. Relationships among classifications of ayurvedic medicine diagnostics for imbalances and western measures of psychological states: An exploratory study. J Ayurveda Integr Med. 2019 Jul-Sep;10(3):198-202. doi: 10.1016/j.jaim.2018.02.001. Epub 2018 Oct 29. PMID: 30385015; PMCID: PMC6822152.
View at Publisher | View at Google Scholar -
Pratte A Morgan, Nanavati B Kaushal et al, Treatment for Anxiety: A Systematic Review of Human Trial Results Reported for the Ayurvedic Herb Ashwagandha (Withania somnifera), PMC4270108,
View at Publisher | View at Google Scholar -
Archana R, Namasivayam A. Antistressor effect of Withania somnifera. J Ethnopharmacol. 1999; 64: 91–93. doi: 10.1016/s0378-8741(98)00107-x.
View at Publisher | View at Google Scholar -
Chodavadia P, Teo I, Poremski D, Fung DSS, Finkelstein EA. Prevalence and economic burden of depression and anxiety symptoms among Singaporean adults: results from a 2022 web panel. BMC Psychiatry. 2023 Feb 14;23(1):104. doi: 10.1186/s12888-023-04581-7. PMID: 36782116; PMCID: PMC9925363.
View at Publisher | View at Google Scholar -
Abdel-Magied EM, Abdel-Rahman HA, Harraz FM. The effect of aqueous extracts of Cynomorium coccineum and Withania somnifera on testicular development in immature Wistar rats. J Ethnopharmacol. 2001;75:1–4. doi: 10.1016/s0378-8741(00)00348-2.
View at Publisher | View at Google Scholar -
Singh RS. Ashwagandha, Vanaushadhi Nidharsika (Ayurvedic Pharmacopia) UP Sansthan: 1983. pp. 30–31.
View at Publisher | View at Google Scholar -
Tripathi Indradev, Raja Nighuntu, 4th ed., Chaukhambha Krishnadas Academy, Varanasi, 2006, p.83.
View at Publisher | View at Google Scholar -
Sharma PV, Priya Nighuntu, 1st ed., Chaukhambha Bharati Academy, Varanasi, 2004, p.95.
View at Publisher | View at Google Scholar -
Gyanendra Panday, Sodhala Nighuntu, 1st ed., Chaukhambha Krishnadas Academy, Varanasi, 2009, p.52.
View at Publisher | View at Google Scholar -
Sharma PV, Dhanwantri Nighuntu, 4th ed., Chaukhambha Orientalia, Varanasi, 2004, p.64
View at Publisher | View at Google Scholar -
Chunakar KC, Bhavprakasha Nighuntu. 1st ed., Chaukhambha Bharati Academy, Varanasi, 2004, p.219.
View at Publisher | View at Google Scholar -
Sharma PV, Kaiydeva Nighuntu, 2nd ed., Chaukhambha Orientalia, Varanasi, 2006, p.193.
View at Publisher | View at Google Scholar -
Gyanendra Panday, Madanapala Nighuntu, 1st ed., Chaukhambha Orientalia, Varanasi; 2012,p.115.
View at Publisher | View at Google Scholar -
Sri Khenraj, Madana Vinoda Nighuntu, 1st ed., Krishandas Prakashan, Mumbai; 2004.p.20.
View at Publisher | View at Google Scholar -
Khare CP. Indian herbal remedies: rational Western therapy, Ayurvedic, and other traditional usage, Botany. Springer science & business media; 2004.
View at Publisher | View at Google Scholar -
Khory NR, Katrak NN. Materia medica of India and their therapeutics 380. BDH Printers, New Delhi; 1999.
View at Publisher | View at Google Scholar -
Mishra LC, Singh BB, Dagenais S. Scientific basis for the therapeutic use of Withania somnifera. (Ashwagandha): A review. Alternative Medicine Reviews. 2000;5:334–346.
View at Publisher | View at Google Scholar -
Bhattacharya SK, Goel RK, Kaur R, Ghosal S. Anti - stress activity of Sitoindosides VII and VIII. New Acylsterylglucosides from Withania somnifera. Phytother Res. 1987;1:32–37
View at Publisher | View at Google Scholar -
Ghosal S, Srivastava RS, Bhattacharya SK, Upadhyay SN, Jaiswal AK, Chattopadhyay U. Immunomodulatory and CNS effects of sitoindosides IX and X, two new glycowithanolides form Withania somnifera. Phytother Res. 1989;2:201–206.
View at Publisher | View at Google Scholar -
Atta-ur-Rahman, Samina-Abbas, Dur-e-Shahwar, Jamal SA, Choudhary MI, Abbas S. New withanolides from Withania spp. Journal of Natural Products. 1991;56:1000–1006.
View at Publisher | View at Google Scholar -
Lopresti AL, Smith SJ. Ashwagandha (Withania somnifera) for the treatment and enhancement of mental and physical conditions: A systematic review of human trials. Journal of Herbal Medicine 2021;28:100434.
View at Publisher | View at Google Scholar -
Gopukumar K, Thanawala S, Somepalli V, Rao TSS, Thamatam VB, et al. Efficacy and Safety of Ashwagandha Root Extract on Cognitive Functions in Healthy, Stressed Adults: A Randomized, Double- Blind, Placebo-Controlled Study. Evid Based Complement Alternat Med 2021;2021:8254344.
View at Publisher | View at Google Scholar -
Majeed M, Nagabhushanam K, Mundkur L. A standardized Ashwagandha root extract alleviates stress, anxiety, and improves quality of life in healthy adults by modulating stress hormones: Results from a randomized, double-blind, placebo-controlled study. Medicine (Baltimore) 2023;102:e35521.
View at Publisher | View at Google Scholar -
Baker C, Kirby JB, O’Connor J, Lindsay KG, Hutchins A, et al. The Perceived Impact of Ashwagandha on Stress, Sleep Quality, Energy, and Mental Clarity for College Students: Qualitative Analysis of a Double-Blind Randomized Control Trial. J Med Food 2022;25:1095-101.
View at Publisher | View at Google Scholar -
ClinicalTrials.gov. The impact of Ashwagandha on perceived stress, sleep and food cravings in college students 2022
View at Publisher | View at Google Scholar -
Akhgarjand C, Asoudeh F, Bagheri A, Kalantar Z, Vahabi Z, Shab-Bidar S, Rezvani H, Djafarian K. Does Ashwagandha supplementation have a beneficial effect on the management of anxiety and stress? A systematic review and meta-analysis of randomized controlled trials. Phytother Res. 2022 Nov;36(11):4115-4124. doi: 10.1002/ptr.7598. Epu0b 2022 Aug 25. PMID: 36017529.
View at Publisher | View at Google Scholar -
S.K. Bhattacharya, A. Bhattacharya , K. Sairam, S. Ghosal, Anxiolytic-antidepressant activity of Withania somnifera glycowithanolides: an experimental study, Elsevier, Phytomedicine, Volume 7, Issue 6, December 2000, Pages 463-469.
View at Publisher | View at Google Scholar -
Remenapp A, Coyle K, Orange T, Lynch T, Hooper D, et al. Efficacy of Withania somnifera supplementation on adult’s cognition and mood. J Ayurveda Integr Med 2022;13:100510.
View at Publisher | View at Google Scholar -
Smith SJ, Lopresti AL, Fairchild TJ. Exploring the efficacy and safety of a novel standardized ashwagandha (Withania somnifera) root extract (Witholytin®) in adults experiencing high stress and fatigue in a randomized, double-blind, placebo-controlled trial. J Psychopharmacol 2023;37:1091-104.
View at Publisher | View at Google Scholar -
Deshpande A, Irani N, Balkrishnan R, Benny IR. A randomized, double blind, placebo controlled study to evaluate the effects of ashwagandha (Withania somnifera) extract on sleep quality in healthy adults. Sleep Med 2020;72:28-36.
View at Publisher | View at Google Scholar -
Langade D, Thakare V, Kanchi S, Kelgane S. Clinical evaluation of the pharmacological impact of ashwagandha root extract on sleep in healthy volunteers and insomnia patients: A double-blind, randomized, parallel-group, placebo-controlled study. J Ethnopharmacol 2021;264:113276.
View at Publisher | View at Google Scholar -
Bonilla DA, Moreno Y, Gho C, Petro JL, Odriozola-Martínez A, Kreider RB. Effects of Ashwagandha (Withania somnifera) on Physical Performance: Systematic Review and Bayesian Meta-Analysis. J Funct Morphol Kinesiol. 2021 Feb 11;6(1):20. doi: 10.3390/jfmk6010020. PMID: 33670194; PMCID: PMC8006238.
View at Publisher | View at Google Scholar -
Salve J, Pate S, Debnath K, Langade D. Adaptogenic and Anxiolytic Effects of Ashwagandha Root Extract in Healthy Adults: A Double-blind, Randomized, Placebo-controlled Clinical Study. Cureus. 2019 Dec 25;11(12):e6466. doi: 10.7759/cureus.6466. PMID: 32021735; PMCID: PMC6979308.
View at Publisher | View at Google Scholar -
Cheah KL, Norhayati MN, Husniati Yaacob L, Abdul Rahman R. Effect of Ashwagandha (Withania somnifera) extract on sleep: A systematic review and meta-analysis. PLoS One. 2021 Sep 24;16(9):e0257843. doi: 10.1371/journal.pone.0257843. PMID: 34559859; PMCID: PMC8462692.
View at Publisher | View at Google Scholar -
Kuttan G, Use of Withania somnifera Dunal as an adjuvant during radiation therapy, Indian J Exp Biol. 34(1996), 854-856.
View at Publisher | View at Google Scholar -
Singhal K Harish, Neetu et al, A Review on Ashwagandha (Withania somnifera (L.) Dunal), International Journal of Ayurveda and Pharmaceutical Chemistry, 2014,Vol. 1, Issue 1, 2014,
View at Publisher | View at Google Scholar -
Kurapati, K.R.V.; Atluri, V.S.R.; Samikkannu, T.; Nair, M.P.N. Ashwagandha (Withania somnifera) reverses β-amyloid1-42 induced toxicity in human neuronal cells: Implications in HIV-associated neurocognitive disorders (HAND). PLoS ONE 2013, 8, e77624.
View at Publisher | View at Google Scholar -
Pandey, A.; Bani, S.; Dutt, P.; Satti, N.K.; Suri, K.A.; Qazi, G.N. Multifunctional neuroprotective effect of Withanone, a compound from Withania somnifera roots in alleviating cognitive dysfunction. Cytokine 2018, 102, 211–221.
View at Publisher | View at Google Scholar