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EPA Supplement Hinders Brain Repair, Raises Tau Risk in Mice

4/28/2026

Summary

Story summary

Researchers at the Medical University of South Carolina reported that EPA supplementation slowed brain healing in mice with brain injuries.
EPA levels dropped sharply after injury, whereas DHA stayed steady in the mice’s brains.
EPA-treated mice showed impaired blood-vessel repair, higher cognitive decline risk, and abnormal tau protein linked to chronic traumatic encephalopathy.
Lead author Onder Albayram said results show omega-3 effects depend on context and call for human studies.

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Story summary

Researchers at the Medical University of South Carolina reported that EPA supplementation slowed brain healing in mice with brain injuries.
EPA levels dropped sharply after injury, whereas DHA stayed steady in the mice’s brains.
EPA-treated mice showed impaired blood-vessel repair, higher cognitive decline risk, and abnormal tau protein linked to chronic traumatic encephalopathy.
Lead author Onder Albayram said results show omega-3 effects depend on context and call for human studies.