RESUMO
BACKGROUND: The global prevalence of stress is increasing. Stress adversely affects cognitive ability, sleep quality, and overall psychological well-being. Ashwagandha (Withania somnifera (L.) Dunal), an essential medicine in Ayurveda, is reportedly beneficial in reducing stress and improving memory. This double-blind, randomized, placebo-controlled clinical study evaluated the effect of Ashwagandha root extract sustained-release capsule 300 mg (Prolanza™; hereafter Ashwagandha SR) on cognitive functions, stress levels, sleep quality, overall well-being, and safety in stressed subjects. METHODS: Subjects (130 healthy cognitively sound adults [20-55 years, body mass index:18-29 kg/m2]) having a Perceived Stress Scale (PSS) score of 14-24 were randomized to receive either Ashwagandha SR or placebo. Subjects took one capsule of Ashwagandha SR or placebo daily for 90 consecutive days. This study was registered on Clinical Trials Registry-India (CTRI) on 13/11/2019 [number: CTRI/2019/11/021990]. The primary endpoint was the change in cognitive function as measured by CANTAB from baseline to the end of the study period (90 ± 7 days). The secondary outcomes included the change in PSS-10 score, serum cortisol level (9-11 am), the OHQ score, the PSQI, and serum BDNF levels. RESULTS: Only 125 completed the study and were evaluated. The Cambridge Neuropsychological Test Automated Battery (CANTAB) reported significantly improved recall memory, and the total error rate in recalling patterns significantly decreased at visit 4 in the Ashwagandha SR group vs. the placebo group (first attempt memory score:12.9 ± 6.7 vs. 10.1 ± 6.3; total errors:17.5 ± 23.3 vs. 27.7 ± 23.6). At visit 4, lower PSS-10 score (13.0 ± 5.0 vs. 18.7 ± 4.6; p < .0001), serum cortisol levels (p=0.0443), and Pittsburgh Sleep Quality Index (PSQI) score (p < .0001) but higher Oxford Happiness Questionnaire (OHQ) scores (p < .0001) were seen in Ashwagandha SR vs. the placebo group, suggesting significantly lower stress levels and significantly better psychological well-being and sleep quality in the former. No adverse events were reported. CONCLUSIONS: This is the first clinical study assessing Ashwagandha SR for its safety and efficacy. Treatment with one Ashwagandha SR capsule once daily for 90 days improved memory and focus, psychological well-being, and sleep quality, reduced stress levels, and was safe and well-tolerated.
RESUMO
PURPOSE OF REVIEW: Sexual dysfunction is associated with many medical disorders. Lack of recognition of sexual dysfunction commonly occurs in medical practice. The impact of unrecognized sexual dysfunction affects quality of life, which in turn affects the recovery from medical illness. This article reviews the recent literature regarding sexual dysfunction in medical practice published in PubMed, Clinical key, Scopus, Google scholar from November 2014 to May 2016. RECENT FINDINGS: New findings suggest that sexual dysfunction is associated with most of the disorders affecting various systems. Sexual dysfunction associated with medical disorders, apart from having effects on patients, also has impact on spouses. Sexual dysfunction may also be a predictor of future major adverse event. Prevelance of sexual dysfunction in various major illness is in the range of 20-75%. Phosphodiesterase-5 inhibitors which are first line drugs to treat erectile dysfunction cause no increase in myocardial infarction or death. SUMMARY: Sexual functioning is impaired in neurological, endocrinal, cardiovascular, pelvic, dermatological, and other disorders. Stroke, epilepsy, traumatic brain injury, and other neurological disorders cause significant impairment in sexual functioning. Though exact correlation between androgen and sexual functioning cannot be made, androgen plays important role various phases of sexual cycle in both men and women. Diabetes has impact on all the phases of sexual cycle. Hypertension, as well as certain drugs used to treat hypertension also causes sexual dysfunction, judicious use of hypotensive drugs is recommended.