Popular Supplement May Have an Unexpected Downside, Study Finds
ScienceAlert • • health
Key Points:
- New research on mice with mild traumatic brain injuries suggests that the omega-3 fatty acid EPA, commonly found in fish oil supplements, may hinder brain repair by disrupting blood vessel recovery and impairing spatial memory and learning.
- Unlike EPA, DHA, another omega-3 fatty acid important for brain cell maintenance, did not interfere with repair processes in experiments using human brain cells, highlighting differing effects among omega-3s.
- EPA accumulation in injured mouse brains was linked to blood vessel destabilization and toxic tau protein buildup, which is associated with brain degeneration and conditions like chronic traumatic encephalopathy (CTE).
- Findings raise concerns that EPA-containing fish oil supplements might increase CTE risk by impairing recovery from mild concussions, though these conclusions are preliminary and primarily based on animal and cell studies.
- Researchers emphasize the need for further investigation into the distinct roles of EPA and DHA in brain health, advocating for a more nuanced approach to omega-3 supplementation rather than a one-size-fits-all perspective.
