High Omega-3, Low Omega-6 Diet With Fish Oil for Men With Prostate Cancer on Active Surveillance: The CAPFISH-3 Randomized Clinical Trial. Journal of Clinical Oncology, 2024; DOI: 10.1200/JCO.24.00608 ...

They may also have a lower omega-3 content and higher omega-6 content. However, farm-raised fish are less likely to have toxins and heavy metals like mercury than wild fish.

The findings point to the fact that supplementation with fish oil can potentially alter the trajectory of Alzheimer’s disease, especially for individuals already at risk due to low omega-3 levels.

"However, tuna is not a great source of anti-inflammatory omega-3 fatty acids, and it contains high levels of mercury — so if you enjoy it, you should try to limit it to 1-2x a week," she continued.