There is a growing body of research that links the omega-3 fatty acids found in canned tuna and other fatty fish with optimal brain function and cognition and improved eye and skin health. Moreover, studies show that these omega-3 fatty acids are protective against certain cancers and have a therapeutic effect on depression and specific autoimmune diseases including lupus, psoriasis and arthritis.

Canned tuna is also one of the best sources of selenium, which research suggests promotes sound health and may reduce cancer risk.