Eating fish as part of a balanced meal with other healthy ingredients—such as richly colored vegetables and potatoes—delivers a variety of natural nutritional benefits which fish oil supplements cannot reproduce in clinical tests.
Seafood is rich in D and B vitamins, selenium, iodine, iron and taurine. The combination of taurine and Omega-3 fatty acids in seafood, has been shown to lower your cholesterol levels more effectively than fish-oil based supplements, which lack this omega-3 fatty acids alone.
Natural omega-3 acids, containing DHA healthy fat, is known to lower blood pressure. By exchanging sodium, calcium and potassium ions in and out of the smooth muscle cells that line blood vessels, dilation occurs and allows blood to flow more freely. The synthetic DHA found in fish oil supplements works against the effects of natural DHA obtained from seafood sources, and can even raise blood pressure.