Seafood is healthy because it contains essential nutrients in rich amounts, but the composition of these nutrients varies, depending on the species. Moreover, seafood is a good source of protein and is also low in unhealthy saturated fats.

Omega-3 fatty acids

Omega-3 fatty acids are a type of polyunsaturated fatty acid (PUFA). They are an essential component of the human diet because our bodies cannot produce them. These fats contributes to proper brain growth and development. Omega-3 fatty acids are most abundant in deep-water fatty fish and in some plant oils. They have anti-inflammatory effects on the body and may be helpful in the prevention and treatment of numerous conditions.

The omega-3 fatty acid content varies greatly among different species of fish. Cold-water fatty fish have the highest content of omega-3 fatty acids because their physiology, environment and diet promote omega-3 fatty acid production in their flesh.

Iodine

Iodine is one of the hormones in the thyroid gland, which regulates the body's metabolism.

Selenium

Selenium is important for the body's immune system and there is great focus on the importance of selenium with regard to cancer and cardiovascular disease.