DHA improves cognitive function in adults
evidence
The Claim
Many people believe that supplementing with DHA can significantly boost brain power and improve cognitive abilities in adults. This belief is often supported by the fact that DHA is a major component of brain tissue.
Origin
This myth largely stems from marketing claims by supplement manufacturers and early studies suggesting a link between DHA and brain health.
What Science Says
Research, including randomized controlled trials (RCTs) and meta-analyses, indicates that while DHA is important for brain development in infants, its impact on cognitive function in healthy adults is less clear. A 2020 meta-analysis found only modest effects on specific cognitive domains, and these were not consistent across studies. The overall evidence does not robustly support significant cognitive improvements in adults from DHA supplementation.
Verdict
Partially True
Sources
- PMID:38468309 The influence of n-3 polyunsaturated fatty acids on cognitive function in individuals without dementia: a systematic review and dose-response meta-analysis.
- PMID:38924283 The effects of omega-3, DHA, EPA, Souvenaid® in Alzheimer's disease: A systematic review and meta-analysis.
- PMID:38300291 Effects of vitamins and polyunsaturated fatty acids on cognitive function in older adults with mild cognitive impairment: a meta-analysis of randomized controlled trials.