Omega-3 fatty acids are found in fish and can help protect your brain and heart from aging. Research has shown that you can benefit as much as a 33% reduction in risk of having a deadly heart attack if you eat at least 2 servings every week. In addition, eating fish can help you protect your brain. Turns out the EPA and DHA-omega 3 fatty acids found in fish can help people with cognitive impairments. You can often find these nutrients in supplements at your local drugstore as well. However, supplements don't have as much evidence of benefit based on recent studies, so it's really best to get your omega-3 from real fish instead. Some favorites include Atlantic mackerel, Pacific sardines, salmon, and black cod.