Fish oil may not boost memory, new USC study suggests

A study by Keck Medicine of USC, published in eBioMedicine in October 2026, found that people taking daily omega-3 supplements saw no major cognitive advantage. Fish oil capsules are widely taken for memory and concentration. Lead investigator Hussein Naji Yassine, who heads the USC Center for Personalized Brain Health, said the findings show the supplements are no silver bullet against Alzheimer's.