The Active Site

Were We Wrong About Fish Oil and the Brain?

May 19, 2026·13 min
Episode Description from the Publisher

For thirty years, the supplement aisle has sold fish oil as one of the simplest decisions you can make for your brain. In 2026, two research teams on opposite sides of the world published papers that complicate that story, and the literature behind them has been building for almost twenty years. IN THIS INVESTIGATION What a 2026 ADNI cohort study of 800+ older adults actually foundWhy faster cognitive decline in fish oil users showed up on every measureWhat the brain imaging revealed when cla...

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