The human body requires essential fats to function properly. These include omega-6 and omega-3 fatty acids. While both types are important, omega-3 fatty acids are particularly vital because they cannot be produced by our bodies. They must come from food sources. Omega-3 fatty acids are found predominantly in fish oil, flaxseed oil, walnuts, and other plant oils. Some studies suggest that consuming these foods regularly may reduce the chances of heart disease and certain cancers. Omega-3 fatty acids are very essential nutrients found in fish oil supplements, nuts, seeds, and leafy green vegetables like kale and spinach. They’re also found naturally in foods like salmon, mackerel, tuna, and flaxseed.