Were We Wrong About Fish Oil and the Brain?

Were We Wrong About Fish Oil and the Brain?

From Daily Value by William Wallace, Ph.D.

May 19, 2026 · 14 min

About this episode

This episode investigates new research challenging the long-held belief about the benefits of fish oil for brain health.

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...

People in this episode

Host: William Wallace

Topics covered

  • fish oil
  • brain health
  • cognitive decline
  • supplements
  • research findings

Keywords

  • fish oil
  • brain
  • cognitive decline
  • supplements
  • research
  • ADNI
  • older adults

Mentioned in this episode

Books & works: ADNI cohort study

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