topicAshwagandha Reaction Time Randomized Trial
claimMethodological quality and risk of bias were assessed with RoB 2, evidence certainty for each outcome was evaluated with GRADE system, and botanical reporting was assessed with the ConPhyMP checklist.
evidence level1
citationZhu X (2026)
sourceEffects of <i>Withania somnifera (L.) Dunal</i> (Ashwagandha) on cognitive and physical function in adults: a systematic review and meta-analysis.
topicAshwagandha Reaction Time Randomized Trial
claimAshwagandha significantly improved memory (SMD = 0.52; 95% CI: 0.27-0.78; P 2 = 29.7%), attention and processing speed (SMD = 0.29; 95% CI: 0.07-0.51; P = 0.009; I 2 = 0%), and executive function (SMD = -0.42; 95% CI: -0.70 to -0.13; P = 0.004; I 2 = 37.5%).
evidence level1
citationZhu X (2026)
sourceEffects of <i>Withania somnifera (L.) Dunal</i> (Ashwagandha) on cognitive and physical function in adults: a systematic review and meta-analysis.
topicAshwagandha Reaction Time Randomized Trial
claimVisuospatial ability improved after excluding one heterogeneous study (SMD = 0.39; 95% CI: 0.08-0.70; P = 0.013; I 2 = 0%).
evidence level1
citationZhu X (2026)
sourceEffects of <i>Withania somnifera (L.) Dunal</i> (Ashwagandha) on cognitive and physical function in adults: a systematic review and meta-analysis.
topicAshwagandha Reaction Time Randomized Trial
claimBackground This study aimed to systematically review and evaluate the effects of Withania somnifera (L.) Dunal (Solanaceae) supplementation on cognitive and physical function in adults by meta-analysis.
evidence level1
citationZhu X (2026)
sourceEffects of <i>Withania somnifera (L.) Dunal</i> (Ashwagandha) on cognitive and physical function in adults: a systematic review and meta-analysis.