Fish oil boosts brain function in all adults
7.0Moderate
evidence
evidence
The Claim
It's commonly believed that omega-3 supplements can enhance cognitive abilities and prevent memory decline in all adults, not just those with existing cognitive impairments.
Origin
This myth is perpetuated by marketing claims and some early studies suggesting cognitive benefits from diets high in fish.
What Science Says
Research indicates the effects of omega-3 on brain health are more nuanced. A systematic review published in the Cochrane Database found that while omega-3s might benefit those with mild cognitive decline, they do not significantly enhance cognitive function in healthy adults. The effect is often too small to be clinically relevant.
Verdict
Partially True
Sources
- PMID:36381743 Effects of Omega-3 Polyunsaturated Fatty Acids on Brain Functions: A Systematic Review.
- 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:28741625 Omega-3 Polyunsaturated Fatty Acids in Youths with Attention Deficit Hyperactivity Disorder: a Systematic Review and Meta-Analysis of Clinical Trials and Biological Studies.