Health topic

Stress

These are reviewed research connections, not a ranked list of remedies. An ingredient can appear here because evidence was uncertain, preclinical, or limited to a specific preparation and setting.

Ailment-to-evidence view

What the reviewed research points to

This order reflects the depth of the reviewed evidence, not which option works best or what anyone should take. Mixed and negative findings stay in the list because they can be more useful than a promising headline.

Deeper reviewed evidence Mixed or uncertain

Ashwagandha

The biological marker moved while the patient-reported outcome did not, so a broad claim that ashwagandha reduces stress would outrun the data.

Studied form
Mixed oral ashwagandha extracts using different plant parts, withanolide specifications, doses, and durations
Outcome
Cortisol concentration and Perceived Stress Scale scores
Evidence
Systematic review and meta-analysis of randomized controlled trials
See the evidence and cautions →
How this order is calculated

Evidence syntheses come before individual randomized trials, which come before early human and preclinical work. Sample-size bands add a small amount. Positive, mixed, negative, and safety-only directions do not change the depth score. Study independence is not yet scored, so overlapping reviews must not be counted as separate confirmation.

Connected ingredients

What appears in the current evidence map

Source-linked records

1 reviewed record

Evidence synthesis Mixed or uncertain 488 participants represented across cortisol and perceived-stress analyses

Ashwagandha and stress: cortisol moved, perceived stress did not

The pooled trials found lower cortisol, but they did not find a statistically significant improvement in perceived stress. That mismatch matters: a biomarker change is not the same as feeling better or functioning better. The studies also had moderate risk of bias and did not settle long-term safety, dosing, or product equivalence.

What was studied
Mixed oral ashwagandha extracts using different plant parts, withanolide specifications, doses, and durations
Setting
Studied alone
Why it ranks here
The biological marker moved while the patient-reported outcome did not, so a broad claim that ashwagandha reduces stress would outrun the data.
Limits and cautions
  • Cortisol is a biomarker and cannot substitute for a patient-reported or functional outcome.
  • The perceived-stress result was not statistically significant.
  • Risk of bias was generally moderate, with some allocation-concealment problems.
  • The pooled products used different plant parts, extract specifications, doses, and durations.
  • Long-term safety and effectiveness across diverse populations remain unresolved.

This record does not establish ashwagandha as a treatment for anxiety, depression, trauma, or another mental-health condition. Persistent or severe symptoms deserve qualified care.