Fatty, cold-water fish like salmon, tuna, trout and sardines contain omega-3 fatty acids. These compounds are important for keeping your heart disease-free.
Omega-3 fatty acids reduce the bad fat in your blood (triglycerides), lower blood pressure, help blood platelets slide past each other to keep blood clots from forming, and help you keep a steady, regular heartbeat.
But what's the point of living longer if you don't enjoy it? Fish helps there, too. It can reduce the swelling of arthritic joints, allowing you to stay active. Since omega-3 fatty acids make up about 8 percent of your brain, eating fish is smart. It fights off depression and lowers your risk of dementia, including Alzheimer's disease. Fish may even boost your immunity to prostate, breast and colon cancers.