Ashwagandha Research Update: What New Studies Tell Us in 2026

Ashwagandha continues to be one of the most actively researched adaptogenic herbs. Here's what the latest studies add to our understanding: **Stress and Anxiety:** A 2025 meta-analysis of 12 randomized controlled trials confirmed that ashwagandha root extract significantly reduces cortisol levels and perceived stress scores compared to placebo. The effect size was moderate to large across studies, with KSM-66 extract showing the most consistent results at 600mg daily. **Sleep Quality:** Recent trials show ashwagandha improves both sleep onset latency (time to fall asleep) and overall sleep quality. A 2025 study using sleep tracking data found that participants taking 300mg of ashwagandha extract twice daily experienced 72% improvement in self-reported sleep quality over 8 weeks. **Cognitive Function:** Emerging research suggests ashwagandha may support cognitive function beyond stress reduction. A trial published in early 2026 found improvements in reaction time and task-switching abilities in healthy adults taking ashwagandha for 90 days. **Athletic Performance:** Studies on ashwagandha and exercise performance show promising results for VO2 max improvement and muscle recovery, though the evidence is still considered preliminary. **Safety Profile:** Across all recent trials, ashwagandha demonstrated a favorable safety profile with minimal side effects. The most common side effects were mild gastrointestinal discomfort, which resolved with food intake. As always, research is ongoing, and individual results vary. Consult a healthcare provider before starting any new supplement regimen.