Cod liver oil is a type of fish oil that's especially high in healthy, polyunsaturated fats known as omega-3s and omega-6s.
In addition to these essential nutrients, omega-3 fatty acids are vital for survival ... EPA and DHA are abundant in fish oil and fatty fish such as salmon, mackerel, and sardines, as well as in algae ...
Research suggests that omega-3s can support brain health, especially for people who carry a gene that raises the risk of developing dementia.