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Millions take fish oil for brain health. A two-year study found no benefit

Summary by Science Daily
A surprising two-year clinical trial found that fish oil supplements successfully delivered omega-3s to the brain but failed to improve memory or protect against Alzheimer's-related brain shrinkage. Researchers suspect that getting these nutrients through a healthy diet may offer benefits that supplements alone cannot provide.

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A two-year study conducted in the US revealed that fish oil supplements did not improve memory in older adults and offered no measurable protection against Alzheimer's. It was determined that while omega-3 reaches the brain, it did not enhance cognitive performance.

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Fish oil supplements may increase the levels of omega-3 fatty acids that reach the brain, but that doesn’t mean they protect memory or prevent changes associated with Alzheimer’s disease. This is according to a new two-year clinical study by researchers at the University of Southern California, the results of which were published in the scientific journal eBioMedicine. […] The article Fish Oil and Alzheimer’s – What a Two-Year Study on Memory Sh…

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A study conducted by researchers from Keck Medicine at the University of Southern California revealed that fish oil supplements, widely used for brain health, do not provide significant benefits in terms of...

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MSNBCTV NEWS broke the news on Thursday, October 22, 2026.
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