Long-Term Fish Oil Supplements Show No Cognitive Benefit, Trial Finds

A large-scale clinical trial has found that prolonged consumption of DHA, an omega-3 fatty acid commonly found in oily fish, does not appear to improve cognitive function. DHA is a key ingredient in widely used fish oil supplements, which many people take hoping to support brain health. The study challenges a popular belief that omega-3 supplementation offers measurable mental or cognitive benefits over time. These findings raise questions about the practical value of long-term fish oil supplement use for cognitive outcomes.