DHA supplements prevent depression
6.0Moderate
evidence
evidence
The Claim
There is a common belief that taking DHA supplements can effectively prevent or alleviate depression, given DHA's role in brain health.
Origin
This myth comes from early observational studies and anecdotal reports linking omega-3s to mood improvements.
What Science Says
Current evidence from randomized controlled trials and meta-analyses suggests that the effects of DHA on depression are inconsistent. Some studies show slight mood improvements, but these are often not clinically significant. A 2019 meta-analysis found that while there may be small benefits for depressive symptoms, DHA alone is not a substitute for traditional treatments and shows variable results depending on the population studied.
Verdict
Mostly False
Sources
- PMID:31383846 Efficacy of omega-3 PUFAs in depression: A meta-analysis.
- PMID:32927309 Risk factors for postpartum depression: An evidence-based systematic review of systematic reviews and meta-analyses.
- PMID:37028202 Effects of long-chain omega-3 polyunsaturated fatty acids on reducing anxiety and/or depression in adults; A systematic review and meta-analysis of randomised controlled trials.