Fish-Oil EPA May Hamper Brain Repair After Mild Head Injury

A mouse study found that EPA, an omega-3 in fish oil, can impair blood vessel repair and worsen cognitive recovery after mild traumatic brain injury, while DHA did not have this effect. EPA also accumulated in the brain and was linked to toxic tau buildup, suggesting a context-dependent risk with EPA-containing supplements. Relevance to humans remains uncertain, but the findings highlight the need for precision nutrition and further trials.