TECH · HEALTH
Fish Oil Didn’t Help Memory in a Two-Year Trial
A two-year trial found that fish oil reached the brain but did not improve memory or slow brain shrinkage in older adults.
Transcript of the video edition
Millions of people take fish oil for their brain. A two-year study says it may not help memory at all. Here’s what it found.
Researchers gave 365 adults, aged 55 to 80, a daily high-dose fish oil supplement or a placebo. The supplement did reach the brain.
But it didn’t help. Memory tests were no better than the placebo. Brain scans showed no slowing of shrinkage in a memory region called the hippocampus.
The researchers say this is not a reason to stop eating fish. Diet may matter more than a pill. The trial covered older adults at higher risk, so talk to your doctor before changing anything.
Sources
- ScienceDaily, Oct 20, 2026 (republished trial coverage)
- MedicalXpress, June 2026: fish oil supplements may not prevent Alzheimer’s-related decline
- Keck Medicine of USC trial, published in eBioMedicine; 365 adults aged 55 to 80.
This video edition was scripted with automated tools from the sources listed, narrated by a synthetic voice and published by Daniel Varrone. Corrections: editor@monochromechronicles.com