Widely-used fish oil supplements could actually impede brain healing, particularly after repeated mild traumatic brain injuries.
📍 United States, South Carolina, Medical University of South Carolina
A new study from the Medical University of South Carolina (MUSC) is raising serious concerns about the popular use of fish oil supplements, specifically for individuals who experience repeated mild traumatic brain injuries. Researchers have discovered that these supplements, often touted for their protective benefits, may actually interfere with the brain’s natural healing process. The findings, published in the journal Cell Reports, highlight a previously unknown vulnerability in the brain’s response to omega-3 fatty acids.
The research, led by neuroscientist Onder Albayram, Ph.D., focuses on the biological processes involved in repairing blood vessels in the brain after injury. Growing interest in omega-3 fatty acids—found in fish oil—has seen a surge in popularity, with supplements appearing in a wider range of products. Albayram explains that despite the widespread use, "we still don't know whether the brain has resilience or resistance to this supplement," emphasizing the need for further investigation into the long-term effects. The study involved a collaborative team of researchers from MUSC and partner institutions, including experts from the Cold Spring Harbor Laboratory Cancer Center.
The key discovery centers around eicosapentaenoic acid (EPA), one of the primary omega-3 fatty acids in fish oil. Researchers found that elevated levels of EPA in the brain were associated with weaker repair after injury. Experiments utilizing mouse models linked long-term fish oil use to reduced blood vessel stability and impaired recovery after repeated mild head impacts. This highlights the importance of understanding the nuanced effects of different omega-3 fatty acids and how they interact with the brain’s complex metabolic pathways.
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