Fish oils have been advertised as one possible method for enhancing memory and brain health through the ageing process. However, there is now new research that suggests that there is no evidence of an improvement in cognition from using a high dosage of omega-3 fatty acids during a two-year clinical trial of people who are at risk of developing Alzheimer’s disease, despite confirmation of entry into the brain. This study was carried out by researchers at Keck Medicine of USC and featured in eBioMedicine.
However, these findings dispute the idea that higher levels of a nutrient in the brain lead to better functioning.