Omega-3 essential fatty acids (EFAs) are polyunsaturated good fats found in oil from cold-water fish such as salmon, mackerel and tuna, or in seeds of flax, walnuts, hemp and other plants. They're classified as essential because your body needs them for complete health, yet cannot produce them on its own. They must be obtained through diet or supplementation. Omega-3 EFAs play an important part in cardiovascular wellness by helping to maintain healthy cholesterol levels, blood pressure and heartbeat. They're believed to reduce the "stickiness" of blood cells (also known as platelet aggregation), promoting healthy circulation.

Because Omega-3 EFAs can be converted into anti-inflammatory substances, they're also believed to provide joint support, promoting flexibility, mobility and potential pain relief.