Supplementation Of Ashwagandha Research Articles

Ashwagandha as an Adaptogen: Its Influence on Sleep Patterns, Stress Response, and Anxiety in Modern Life

Background: Ashwagandha (Withania somnifera), a prominent adaptogen in traditional Ayurvedic medicine, has gained substantial attention for its potential to enhance resilience to modern stressors, improve sleep quality, and alleviate anxiety. Preclinical and clinical studies have demonstrated that Ashwagandha’s active compounds, particularly withanolides, influence the hypothalamic-pituitary-adrenal (HPA) axis, leading to reductions in cortisol levels and a more balanced stress response. Puropose: This review aims to consolidate current evidence on Ashwagandha’s efficacy in modulating stress response, improving sleep patterns, and reducing anxiety levels. Material and methods: The review was based on the analysis of materials collected in the databases "Pubmed", Google Scholar, ResearchGate, books and other scientific articles. The search was conducted using keywords: “Ashwagandha”, “Withania somnifera”, “adaptogen”, “stress”, “anxiety”, “sleep”, “cortisol”. “HPA axis”. Results: A review of the literature has shown Ashwagandha anxiolytic properties, with effects comparable to standard anti-anxiety medications but with fewer side effects. Additionally, Ashwagandha has been shown to significantly improve sleep onset latency, sleep duration, and overall sleep quality, particularly in individuals suffering from stress-induced sleep disorders. Conclusions: Ashwagandha shows significant potential as a natural therapy for managing stress, improving sleep quality, and reducing anxiety, primarily through its effects on the hypothalamic-pituitary-adrenal (HPA) axis and cortisol regulation. Clinical trials have demonstrated its efficacy in improving sleep patterns and reducing anxiety, with a generally favorable safety profile. However, there is a need for further research, particularly to better understand the long-term effects and safety of Ashwagandha supplementation.

Effect of Supplementation of Ashwagandha (Withania somnifera) Root Powder on Body Weight Gain and Egg Quality in Layers

Background: As the demand for natural and sustainable solutions in poultry production continues to rise, ashwagandha root powder presents itself as a promising avenue for improving egg quality while aligning with consumer preferences for wholesome and nutritious products. Therefore, research trial was conducted to study the effect of supplementation of ashwagandha root powder on body weight gain and egg quality in layers during a period of 10 weeks. Methodology: One hundred and twenty White Leghorn layers were randomly divided into four treatments and reared on standard managemental conditions. The Ashwagandha root powder was supplemented with the basal diet at 0.5% level (T1), 1% (T2), 1.5 % (T3) while T0 was kept as control i.e. basal diet without ashwagandha root powder. The feed and water were offered ad libitum to experimental birds. Design used: The design of the experiment was a completely randomized design. Duncans multiple range test was used to determine significant difference among means for different treatments. Results: The result noted that the body weight change was not affected by ashwagandha root powder supplementation. Egg quality parameters viz., egg shape index, shell weight, yolk weight, yolk height, albumen weight and albumen index were not influenced by the addition of ashwagandha root powder. However, a significant (p<0.05) effect was observed on yolk index. No significant (p>0.05) difference was seen in the sensory attributes of the egg. It may be suggested that inclusion of ashwagandha root powder in the diets of layer can be improve yolk index without affecting sensory attributes of eggs in layer.

Acute and Repeated Ashwagandha Supplementation Improves Markers of Cognitive Function and Mood.

Ashwagandha has been reported to reduce stress and attenuate cognitive decline associated with inflammation and neurodegeneration in clinical populations. However, the effects as a potential nootropic nutrient in younger populations are unclear. This study examined the effects of liposomal ashwagandha supplementation on cognitive function, mood, and markers of health and safety in healthy young men and women. 59 men and women (22.7 ± 7 yrs., 74.9 ± 16 kg, 26.2 ± 5 BMI) fasted for 12 h, donated a fasting blood sample, and were administered the COMPASS cognitive function test battery (Word Recall, Word recognition, Choice Reaction Time Task, Picture Recognition, Digit Vigilance Task, Corsi Block test, Stroop test) and profile of mood states (POMS). In a randomized and double-blind manner, participants were administered 225 mg of a placebo (Gum Arabic) or ashwagandha (Withania somnifera) root and leaf extract coated with a liposomal covering. After 60-min, participants repeated cognitive assessments. Participants continued supplementation (225 mg/d) for 30 days and then returned to the lab to repeat the experiment. Data were analyzed using a general linear model (GLM) univariate analysis with repeated measures and pairwise comparisons of mean changes from baseline with 95% confidence intervals (CI). Ashwagandha supplementation improved acute and/or 30-day measures of Word Recall (correct and recalled attempts), Choice Reaction Time (targets identified), Picture Recognition ("yes" correct responses, correct and overall reaction time), Digit Vigilance (correct reaction time), Stroop Color-Word (congruent words identified, reaction time), and POMS (tension and fatigue) from baseline more consistently with several differences observed between groups. Results support contentions that ashwagandha supplementation (225 mg) may improve some measures of memory, attention, vigilance, attention, and executive function while decreasing perceptions of tension and fatigue in younger healthy individuals. Retrospectively registered clinical trial ISRCTN58680760.

Unlocking Strength: The Powerful Impact of Ashwagandha (Withania somnifera) Supplementation on Resistance Training

Withania somnifera, commonly known as ashwagandha, has gained popularity in recent years among individuals interested in healthy lifestyles, natural medicine, and sports. This review aims to summarize the current knowledge regarding the effects of ashwagandha supplementation on various aspects of physical performance, particularly in the context of resistance training. Studies have shown that ashwagandha can positively impact muscle strength, with significant increase of muscle force and power output. Additionally, it has demonstrated potential in modulating body composition, with reduction of body fat percentage noted in certain populations. However, results of studies on ashwagandha’s effect on muscle size remain inconclusive and may depend on various factors such as training status and individual responses. In terms of endurance, ashwagandha supplementation has been associated with improvement in maximal oxygen uptake, indicating enhanced aerobic capacity and delayed exhaustion during endurance activities. Furthermore, ashwagandha was shown to aid muscle recovery by reducing exercise-induced muscle damage and inflammatory response, potentially accelerating the muscle regeneration process. Ashwagandha may also influence hormone levels, such as testosterone and cortisol, with potential implications for muscle growth and recovery. However, further research is needed to fully understand the mechanisms underlying these effects. Overall, ashwagandha supplementation appears to hold promise for enhancing physical performance and overall well-being. Further research is needed to elucidate optimal dosages, long-term safety, and potential interactions with other supplements or medications.

The impact of ashwagandha on sleep quality, anxiety reduction, and stress lowering: comparative analysis of available studies

Introduction and objective: The increasing prevalence of sleep disorders, anxiety, and stress in contemporary society necessitates effective and accessible treatments. Ashwagandha - Withania somnifera (WS), an adaptogenic herb utilized in traditional Ayurvedic medicine, has gained significant attention in recent years for its potential to improve various aspects of health and well-being. This comprehensive review of the scientific literature aims to systematize the current scientific reports regarding the impact of Ashwagandha on enhancing sleep quality, reducing levels of anxiety and stress.
 
 Material and Method: In this article, a review of publications available in the PubMed and Google Scholar databases was conducted, with an analysis of clinical and experimental studies focusing on methodology, participant demographics, dosage regimens, and tools for assessing sleep quality, anxiety, and stress levels. Articles were searched using English language terms: "ashwagandha," "Withania somnifera," "influence of sleep quality," "stress," "anxiety."
 
 Conclusions: The scientific studies presented indicate the benefits of Ashwagandha supplementation in the context of improving sleep quality, reducing anxiety states, and stress. The results of various studies, including randomized controlled trials and systematic reviews, suggest that Ashwagandha may positively influence these health aspects through its action on the hypothalamic-pituitary-adrenal (HPA) axis11, modulation of neurotransmitters (GABA, serotonin)1, and antioxidative activity2.

Effects of Ashwagandha (Withania Somnifera) Supplementation on Body Composition and Blood Health Indices in Professional Wrestlers

Abstract Introduction. The purpose of this randomized, double-blind, placebo-controlled study was to evaluate the effect of ashwagandha supplementation on the body composition, blood health and recovery indices, as well as the safety of ashwagandha supplementation in wrestling. Material and Methods. To investigate this, body composition (using dual energy X-ray absorptiometry; DEXA) and blood parameters as indicators of athletes’ health status (i.e., hematology, liver, kidney and muscle tissue function, lipid profile) were measured before and after 8-week supplementation with ashwagandha extract (600 mg/day) in professional national team wrestlers following an intensive training plan (as part of an annual training cycle). Results. At the end of the study, there was a significant increase in fat-free mass and muscle mass, with a significant decrease in fat mass (both in absolute and relative terms) in both ashwagandha and placebo groups (main effect of time, p < 0.05). However, ashwagandha supplementation did not affect any of the body composition parameters (main effect of group or interaction of time and group, p > 0.05). Moreover, intense wrestling training induced an increase in blood creatine kinase activity as an indicator of muscle tissue damage (main effect of time, p < 0.05). Ashwagandha supplementation did not significantly affect any hematological or biochemical blood parameters (p > 0.05 for main effect of group and interaction of time and group). However, the increase in creatine kinase activity during the study seemed to be more pronounced in the placebo group (post-hoc; p < 0.05) than in the ashwagandha group (post-hoc; p > 0.05). Conclusions. In conclusion, ashwagandha supplementation at 600 mg daily for 8 weeks is well tolerated and safe for professional wrestlers. This strategy does not appear to offer additional body composition benefits beyond the effect of intense wrestling training. On the other hand, our results indicate some potential for ashwagandha in improving muscle tissue recovery, which needs to be confirmed on a larger population of athletes.

Abstract C055: Withaferin A offers novel targeted immunotherapy against high-grade serous ovarian carcinoma

Abstract Background: Tumor-induced immunosuppression and cell proliferation are the hallmarks of progression of malignant tumors including high-grade serous ovarian carcinoma (HGSOC), a fatal malignancy of women. Natural killer (NK) cell plays critical roles in killing tumor cells in the tumor vicinity as it does not require antigen presentation. Our earlier studies showed the frequency of tumor infiltrating NK cells is significantly low as compared with that of tumor stroma suggesting that tumor-induced factors may be involved in inhibition of NK cell infiltration, and the tumor continue to metastasize. Cytokines including IL-10/IL-15 are used to stimulate NK cells and tumor continuously secretes IL-10 or IL-15 and it is possible that excessive exposure to these cytokines induces cytokine inducible SH2-containing protein (CISH), a marker of NK cell exhaustion. We have shown earlier that root powder of Ashwagandha (ASH), an anti-stress natural herb improved NK cell population and reduced tumor progression. The goal of this study was to determine whether Withaferin A (WFA), an active ingredient of ASH, targets the induction of CISH or cyclin D1 (CCND1), a stimulator cell growth and prevented tumor progression. Materials & methods: Study-1: An exploratory study was conducted with clinical specimens which included normal ovaries (n=5) and ovarian high grade serous carcinoma (HGSC) at both early and late stages (n=5 each) and expression levels of CISH and CCND1 were examined. Study-2: A prospective study using the laying hen model of OVCA supplemented with or without 2% dietary ASH root powder for 90 days (n=7 each;normal, early and late-stage). Normal and tumor ovarian tissues were collected at the end of the study and used for analysis. Both the clinical and hen specimens were used for immunohistochemistry, western blotting and gene expression assays to determine expression levels of CISH and CCND1. In vitro studies were also conducted with WFA on the OVCAR3, an HGSC cell line, where multiple doses were tested, and expression of markers previously mentioned were examined. Data were collected and analyzed by ANOVA and unpaired t-test and considered significant when P<0.05. Results: Frequency of CISH-expressing cells in both clinical and hen specimens in normal, early and late-stages were localized. Compared to normal, increased expression of both CISH and CCND1 was seen in early-stages and increased further through late stages. Similarly, strong expression of both CISH and CCND1 was seen in proteomic and genomic studies. ASH supplementation is hens compared to untreated showed a significant decrease (P<0.001) in CISH expression as well as in CCND1 gene expression studies. In vitro studies WFA treatment significantly decreased expression of both markers (P<0.05). Conclusion: The results of this study suggest that both CISH and CCND1 are involved in progression of OVCA and dietary supplementation with ASH or treatment with WFA may be an effective bi-targeted immunotherapy against HGSOC. Support: Ovarian Cancer Spore, Roswell Park Citation Format: Jasmin C. Acosta, Animesh Barua. Withaferin A offers novel targeted immunotherapy against high-grade serous ovarian carcinoma [abstract]. In: Proceedings of the AACR-NCI-EORTC Virtual International Conference on Molecular Targets and Cancer Therapeutics; 2023 Oct 11-15; Boston, MA. Philadelphia (PA): AACR; Mol Cancer Ther 2023;22(12 Suppl):Abstract nr C055.

Benefits of Withania somnifera (Ashwagandha) supplementation in obesity

Introduction and purpose: Ashwagandha (fam. Solanaceae) also known as Withania somnifera, is an herb commonly used in traditional Ayurvedic medicine. It is sometimes called Indian ginseng or winter cherry and it is used for its extensive health benefits for millennia as a Rasayana. Ashwagadha supplementation is playing an increasing role not only as an adaptogen, but is beneficial in the context of health in individuals struggling with obesity. This is a growing field of research and the aim of this brief review is to provide an update on the positive effects of Ashwagandha supplementation on the health of those dealing with obesity. 
 Description of the state of knowledge: Ashwagandha has a wide range of positive effects, most common are sedative, anti-stress, immunomodulatory and anti-cancer effects. The literature also draws attention to other results such as binding insulin sensitivity, increasing endurance, effects on adipogenesis and lipogenesis. Ashwagandha lowers blood cortisol levels, inhibits fat accumulation and the expression of genes involved into excessive fat tissue accumulation. 
 Summary: Regular intake of Ashwagandha is associated with health benefits in people struggling with obesity. As an adaptogen with adipogenic potential, Ashwagandha has great potential to participate in future adjunctive obesity therapy and the prevention of other similar and obesity-related diseases, but further research is needed in this area.

Potential clinical usage of ashwagandha root extract: A review

INTRODUCTION AND OBJECTIVE
 Ashwagandha, an herb commonly used in traditional Indian medicine, has been gathering attention as a potential drug in various specialties such as psychiatry, neurology, or endocrinology and even as a possible cancer treatment. In this review we aim to summarize reports form recent years on potential clinical usage of Ashwagandha.
 REVIEW METHODS
 The literature review was conducted using PubMed and Google Scholar online databases.
 THE STATE OF KNOWLEDGE
 Several studies evaluating potential pharmacological uses of Ashwagandha root extract has been published. There are clinical trials conducted in India using the plant in treatment of insomnia that resulted in improved sleep quality. Ashwagandha root extract has been successfully administered in stress-related disorders. There are reports of improvement in cognitive functions in patients with mild cognitive impairment and better symptom control in obsessive-compulsive disorder after Ashwagandha supplementation. Ashwagandha has been studied in endocrine diseases, showing potential in alleviating climacteric symptoms during perimenopause and in subclinical hypothyroidism. The study aimed to assess effect of Ashwagandha on vitality and hormonal changes in elderly men showed mixed results, with improvement in some hormonal levels and not statistically significant improvement in quality of life compared to placebo group. It has also been noted that ashwagandha root extract has positive effect on cardiovascular system, as well as enhancing muscle strength and recovery in otherwise healthy adults.
 SUMMARYAshwagandha root extract seems to possess beneficial properties that allow for its use in several branches of medicine. However as current findings are reported from small sample studies, further research on a larger scale is needed.

Ashwagandha (Withania somnifera) - influence on sleep: review

Introduction: Ashwagandha (Withania somnifera) is a plant found on the Indian subcontinent. The health-promoting properties attributed to it have been largely verified in numerous studies over the past 20 years. This article reviews studies on the effects of ashwagandha supplementation on sleep, its deprivation, and studies analyzing the mechanisms determining such effects. Materials and methods: A review of the literature available in the PubMed database was carried out, using the key words: "ashwagandha" ; "sleep" ; "insomnia", "withania", "somnifera", "withanolide", "withaferin". Results: Ashwagandha has a positive effect on the quality and length of sleep. It is indicated that it improves sleep parameters among both insomniacs and healthy people. In addition, it has been proven to reduce oxidative stress under conditions of sleep deprivation. Ashwagandha's positive effects on sleep have been shown to be related to its effects on GABA-nergic transmission, and the chemical responsible for the plant's sleep induction is triethylene glycol. Its regular use increases dopamine levels in the brain and could potentially be useful in treating the sleep-related disorder restless legs syndrome. Conclusions: The use of ashwagandha is a potential direction for treating sleep disorders and improving sleep quality in healthy individuals. There is a need for further development and studies on larger groups of patients to exploit its potential.

Effects of Acute Ashwagandha Ingestion on Cognitive Function.

Background: Ashwagandha (Withania somnifera) has been reported to decrease perceptions of stress, enhance mood, and improve cognitive function. However, it is currently unknown whether acute ashwagandha supplementation affects memory and cognitive function. This study evaluated the effects of acute ashwagandha extract ingestion on executive function. Materials and Methods: 13 healthy volunteers were administered the Berg–Wisconsin Card Sorting (BCST), Go/No-Go (GNG), Sternberg Task (STT), and Psychomotor Vigilance Task (PVTT) tests. Participants then ingested in a double-blind, placebo-controlled, and crossover manner 400 mg of a placebo (PLA) or ashwagandha (ASH) extract (NooGandha®, Specnova Inc., Boca Raton, FL, USA). Participants then performed cognitive function tests every hour for 6 h. After a 4-day washout period, volunteers repeated the experiment while receiving the remaining supplement. Data were analyzed by repeated measures General Linear Model multivariate and univariate statistics with body weight as a covariate. Results: Acute ASH supplementation increased STT-determined working memory as demonstrated by an improvement in 6 letter length, Present Reaction Time at 3 and 6 h. PVTT analysis revealed that ASH sustained attention by helping maintain reaction times, preventing mental fatigue, and remaining vigilant. Conversely, reaction times (at task 20, hour 6; overall, hour 3) increased with PLA. In the BCST, there was evidence that ASH increased the ability to recognize and ‘shift’ to a new rule compared with baseline. However, this was not seen when evaluating changes from baseline, suggesting that differences in baseline values influence results. In the GNG test, ASH ingestion promoted faster response times to respond correctly than PLA, indicating less metal fatigue. However, ASH did not affect accuracy compared to PLA, as both treatments decreased the percentage of correct answers. Conclusions: Acute supplementation with 400 mg of ashwagandha improved selected measures of executive function, helped sustain attention, and increased short-term/working memory.

Does Ashwagandha supplementation have a beneficial effect on the management of anxiety and stress? A systematic review and meta-analysis of randomized controlled trials.

Clinical trial studies revealed conflicting results on the effect of Ashwagandha extract on anxiety and stress. Therefore, we aimed to evaluate the effect of Ashwagandha supplementation on anxiety as well as stress. A systematic search was performed in PubMed/Medline, Scopus, and Google Scholar from inception until December 2021. We included randomized clinical trials (RCTs) that investigate the effect of Ashwagandha extract on anxiety and stress. The overall effect size was pooled by random-effects model and the standardized mean difference (SMD) and 95% confidence interval (CIs) for outcomes were applied. Overall, 12 eligible papers with a total sample size of 1,002 participants and age range between 25 and 48 years were included in the current systematic review and meta-analysis. We found that Ashwagandha supplementation significantly reduced anxiety (SMD: -1.55, 95% CI: -2.37, -0.74; p=.005; I2 =93.8%) and stress level (SMD: -1.75; 95% CI: -2.29, -1.22; p=.005; I2 =83.1%) compared to the placebo. Additionally, the non-linear dose-response analysis indicated a favorable effect of Ashwagandha supplementation on anxiety until 12,000 mg/d and stress at dose of 300-600 mg/d. Finally, we identified that the certainty of the evidence was low for both outcomes. The current systematic review and dose-response meta-analysis of RCTs revealed a beneficial effect in both stress and anxiety following Ashwagandha supplementation. However, further high-quality studies are needed to firmly establish the clinical efficacy of the plant.

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.

Stress, anxiety, and depression, along with feeling overwhelmed and exhausted have been widely reported by college students as factors that negatively impact their academic performance, and overall well-being. Ashwagandha is an Ayurvedic herb that has been used historically to support healthy responses to stressors, but has recently gained popularity in the United States for its ability to support well-being for populations who experience chronic stress. To our knowledge, there have not been any human trials evaluating the efficacy of ashwagandha on stress in the United States. No studies to date have used qualitative research methods to consider the experiential impact of ashwagandha supplementation. Our purpose was to explore the lived experiences of college students participating in a double-blind randomized control trial evaluating the impact of ashwagandha as an intervention to support college students' well-being. Participants were college students (N = 60) age 18-50 years, who were randomized to either intervention or placebo group to take one capsule twice a day for 30 days. Intervention group participants took 700 mg of full spectrum extract of ashwagandha root per day, whereas those in the placebo group took glycerol capsules. Qualitative data included daily affect check-ins and focus groups. Data were analyzed using Dedoose qualitative coding software and thematic analysis. Four themes resulted regarding energy levels, mental clarity, sleep dynamics, and stress. Our findings demonstrated that ashwagandha increased college students' perceived well-being through supporting sustained energy, heightened mental clarity, and enhanced sleep quality, through a moderate dose of ashwagandha for the course of 30 days. Clinical Trial Registration number: NCT05430685.

Abstract 2520: Ovarian tumors escape anti-tumor function of NK cells by inducing CISH expression and its inhibition prevents tumor progression

Abstract Background: Ovarian cancer (OVCA), a lethal malignancy of women, mainly disseminates locally in the peritoneal cavity and the local immune system plays important roles in inhibiting its progression. Although NK cells, a member of innate immunity, recognize and exert anti-tumor immune responses, tumors escape NK cell immunity and progress to late stages by inducing factors like inhibitory receptors and cytokines. IL-15, a cytokine, stimulates NK cell function and persistent exposure to IL-15 induces cytokine inducible SH2-containing protein (CISH), an inhibitory receptor and a marker of NK cell exhaustion. It is unknown if ovarian tumors use this phenomenon in their favor as the tumor secretes enhanced levels of IL-15. Furthermore, dietary supplementation with root powder of Ashwagandha (ASH), a natural herb and an anti-stress compound has shown to decrease the rates of OVCA metastasis and enhance the frequency of intratumoral NK cells in a preclinical model. However, it is unknown if ASH supplementation improves NK cell frequency by inhibiting CISH. The goal of this study was to examine if OVCA progresses by inducing CISH-expression in NK cells and if dietary ASH supplementation reduces NK cell exhaustion by decreasing CISH expression. Materials and methods: Two studies were conducted. Study 1: Exploratory study with clinical specimens including normal ovaries (n=5) and ovarian high grade serous carcinoma at early and late stages (n=5 each). Study 2: Prospective study using the laying hen model of OVCA supplemented with or without 2% dietary ASH root powder for 90 days (n=7 for each group; normal, early and late stage). Hen normal and tumor ovarian tissues were collected at the end of the study. Both the clinical and hen specimens were used for immunohistochemistry, Western blotting and gene expression assays to determine the frequency of CISH-expressing NK-cells and intensity of GRP78 expression (a marker of cellular stress). Data were collected and analyzed by ANOVA and unpaired t-test and considered significant when P<0.05. Results: CISH-expressing NK cells were localized in normal and tumor ovaries in women and hens. Compared with normal ovaries, frequency of CISH-expressing NK cells was significantly higher in tumors at early and late stages in patients and hens. Similarly, strong expression of CISH gene and protein (29kDa) was detected in tumor tissues. Enhanced expression of CISH positively correlated with expression of GRP78. Compared with untreated, ASH supplementation reduced tumor progression in 5 out of 7 hens and significantly decreased the frequency of CISH-expressing NK cells and GRP78 (P<0.001). Conclusion: The results of this study suggest that expression of CISH by NK cells and cellular stress were associated with OVCA progression and dietary ASH supplementation reduced NK cell exhaustion by decreasing CISH and GRP78. Support: Swim Across America and NIH CA187309 Citation Format: Jasmin C. Acosta, Amy K. Stasik, Janice M. Bahr, Animesh Barua. Ovarian tumors escape anti-tumor function of NK cells by inducing CISH expression and its inhibition prevents tumor progression [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2022; 2022 Apr 8-13. Philadelphia (PA): AACR; Cancer Res 2022;82(12_Suppl):Abstract nr 2520.

Adrenal hypofunction associated with ashwagandha (Withania somnifera) supplementation: a case report

ObjectiveThe use of herbal medicinal supplements has gained huge popularity world-wide, but scientific evidence of their effectiveness and safety remains scarce. Ashwagandha (Withania somnifera) is one such product, claimed to alleviate pain and anxiety by lowering circulating cortisol levels. Withanolides, which are the principal bioactive compounds of ashwagandha, are naturally occurring steroids and may suppress adrenal function. Here, we describe the effect of ashwagandha on adrenal function of a 41-year-old woman with a low body mass index and who suffered chronic pain and lethargy.MethodsAdrenal function was assessed by the short Synacthen test (SST) during and after treatment with ashwagandha supplementation.ResultsWhilst taking daily ashwagandha supplement (21.4 mg of Withanolides), for ten weeks, a SST showed a minimal response to 250 μg of an intramuscular injection of Synacthen (tetracosactide): cortisol levels at T0min = 287 nmol/l, T30min = 289 nmol/l, and T60min = 328 nmol/l; from a morning baseline cortisol level of 480 nmol/l prior to taking the supplement. Ashwagandha was discontinued for two weeks, and a repeat SST was performed showing a completely normal adrenal response: cortisol level at T0min = 275 nmol/l, T30min = 623 nmol/l and T60min = 674 nmol/l.ConclusionTen weeks of ashwagandha supplementation was associated with adrenal hypofunction, which was reversible after a two-week break. Individuals taking ashwagandha should be aware of this potentially detrimental effect. Future studies are suggested to assess whether long-term treatment with ashwagandha could lead to permanent suppression of adrenal function, and to elucidate the effects of ashwagandha compounds on adrenal steroidogenic pathway and hypothalamic–pituitary–adrenal axis.

Efficacy of Withania somnifera supplementation on adult’s cognition and mood

The present study examined the effects of a proprietary Ashwagandha (Withania somnifera) root and leaf extract (NooGandha® Specnova LLC, USA) supplement for improving cognitive abilities, cortisol levels, and self-reported mood, stress, food cravings, and anxiety with adults who have perceived stress. Healthy adults (n = 43 women and n = 17 men; mean age = 34.41 years) who reported experiencing perceived stress were randomized to the following groups: Ashwagandha (400 mg/d), Ashwagandha (225 mg/d), and placebo for 30 days. The following outcomes were assessed at Day 0, Day 15, and Day 30: saliva cortisol levels, cognitive performance (i.e., CNS vital signs), and the self-reported measures of Trait Anxiety Inventory, Depression Anxiety Stress Scale, Perceived Stress Scale, and Food Cravings Questionnaire-15. For the self-report assessments, significant main effects for time were evidenced for anxiety, depression, perceived stress, and food cravings, p's < 0.01. The main effect for group and the interactions were non-significant. For the CNS vital signs, significant differences were observed in cognitive flexibility, visual memory, reaction time, psychomotor speed, and executive functioning, p's < 0.05, with the Ashwagandha groups often out-performing the placebo group. Both Ashwagandha groups had reductions in cortisol levels over time, with significant reductions evidenced for the Ashwagandha 225 mg/d group from Day 0 to Day 15 to Day 30. The placebo group had a non-significant increase in cortisol levels from Day 0 to Day 15–30. No adverse events were reported. In conclusion, Ashwagandha supplementation may improve the physiological, cognitive, and psychological effects of stress.

Effect of an ashwagandha (Withania Somnifera) root extract on climacteric symptoms in women during perimenopause: A randomized, double-blind, placebo-controlled study.

Perimenopause is the period during which many physiological changes mark the transition into the final menstrual period of a woman and these changes are associated with climacteric symptoms. This study aimed to assess the efficacy and tolerability of an Ashwagandha root extract on the climacteric symptoms, quality of life (QoL), and hormonal parameters in perimenopausal women. In this 8-week, randomized, double-blind, placebo-controlled study, 100 women with climacteric symptoms were randomly allocated to take either a placebo or 300 mg of an Ashwagandha root extract twice daily. Outcomes were measured using the menopause rating scale (MRS), menopause-specific QoL (MENQoL), hot flash score, and hormonal changes in estradiol, follicle-stimulating hormone (FSH), luteinizing hormone (LH), and testosterone. Among 100 participants enrolled, 91 participants completed the study. In comparison with the placebo, ashwagandha supplementation was associated with a statistically significant reduction in total MRS score (p < 0.0001), reflected by significant reductions in the psychological (p=0.0003), somato-vegetative (p=0.0152), and urogenital (p < 0.0001) domains. Ashwagandha intake demonstrated a statistically significant reduction in total MENQoL scores (p < 0.0001) and was also associated with a statistically significant increase in serum estradiol (p < 0.0001) and a significant reduction in serum FSH (p < 0.0001) and serum LH (p < 0.05) compared with the placebo. There was no significant between the group differences in the serum testosterone level. These findings suggest that ashwagandha root extract can be a safe and effective option to relieve mild to moderate climacteric symptoms during perimenopause in women.

Ashwagandha for reduced stress and anxiety

Ashwagandha for reduced stress and anxiety

Efficacy of Ashwagandha (withania somnifera [l.] Dunal) in improving cardiorespiratory endurance (VO2 max test) in healthy subjects

In Ayurveda, certain herbal formulas are considered to be Rasayana and they are typically taken over periods of time to regenerate both brain and body tissue. Ashwagandha (Withania Somnifera) is used as an adaptogen, antioxidant, immune modulator, free radical scavenger, anti stress, anti arthritic, antispasmodic, anti inflammatory, nervous tonic, nerve soothing and anticancer agent. Ashwagandha (WS) as a nutritional supplement is yet too established. Maximum oxygen uptake (VO2 max) is a gold standard of cardiopulmonary and muscle cell fitness is considered. The study evaluated the efficacy of Ashwagandha to improve cardiorespiratory endurance (VO2 max) in healthy subjects. They randomized single blind controlled comparative clinical study. 54 health volunteers in each group, study group received Ashwagandha Choorna 12gm with milk (200ml) empty stomach in the morning and the control group only milk (200ml). Maximal capacity of oxygen intake in ml/kg/min (VO2 max) with Rockport fitness walking test of both study and control group were measured before intervention (0th day), after the intervention (60th day) and follow up (90th day). A significant improvement in the VO2 max (F=20.675, P &lt;0.0001) and Hemoglobin (X2=74.150 P &lt;0.0001) in the study group was found. Supplementation of Ashwagandha (Withania Somnifera) with milk improve hemoglobin and VO2 max (maximum aerobic capacity).

Effects of Ashwagandha (Withania somnifera) on Physical Performance: Systematic Review and Bayesian Meta-Analysis.

Ashwagandha (Withania somnifera) is considered a potent adaptogen and anti-stress agent that could have some potential to improve physical performance. This preferred reporting items for systematic reviews and meta-analyses (PRISMA)-based comprehensive systematic review and Bayesian meta-analysis aimed to evaluate clinical trials up to 2020 from PubMed, ScienceDirect, and Google Scholar databases regarding the effect of Ashwagandha supplementation on physical performance in healthy individuals. Besides implementing estimation statistics analysis, we developed Bayesian hierarchical models for a pre-specified subgroup meta-analysis on strength/power, cardiorespiratory fitness and fatigue/recovery variables. A total of 13 studies met the requirements of this systematic review, although only 12 were included in the quantitative analysis. A low-to-moderate overall risk of bias of the trials included in this study was detected. All Bayesian hierarchical models converged to a target distribution (Ȓ = 1) for both meta-analytic effect size (μ) and between-study standard deviation (τ). The meta-analytic approaches of the included studies revealed that Ashwagandha supplementation was more efficacious than placebo for improving variables related to physical performance in healthy men and female. In fact, the Bayesian models showed that future interventions might be at least in some way beneficial on the analyzed outcomes considering the 95% credible intervals for the meta-analytic effect size. Several practical applications and future directions are discussed, although more comparable studies are needed in exercise training, and athletic populations are needed to derive a more stable estimate of the true underlying effect.