Fish oil prevents and/or alleviates heart disease, high blood pressure, arthritis and migraine, headaches, may be protective against cancer, immune deficiency diseases, kidney disease and others. Fish oils also have two special nutrients that protect the heart and arteries, reduce pain, inflammation and swelling, and protect cell membranes. Omega-3 EFAs found in oily fishes are believed to be essential for the healthy development of brain, retina, and nervous tissue among fetus and infant.
During pregnancy these fatty acids are transferred from the mother's tissues to the fetus. However, the FDA has strict guidelines on eating fish during pregnancy because of the possibility of mercury or other toxic substances that may contain in fishes and the best solution is to take fish oil as food supplement
Over the past 30 years more than 7,000 scientific studies have provided evidence supporting the effectiveness of fish oil and omega-3 EFAs in the prevention and treatment of our most common diseases. Hundreds of clinical trials support the efficacy of fish oil's omega-3 essential fatty acids in preventing, mitigating, and remedying an incredible range of health conditions. Some scientific and medical communities however are resisting to these facts and still support pharmacological treatment.
As a traditional dietary supplement that encourages good health, fish oil is a preventive medicine but as a natural alternative to NSAIDs or non-steroidal anti-inflammatory drugs and other pharmacological and medical treatments, it is complementary medicine.
With all the undergoing studies to prove its affectivity, fish oil is on the threshold of crossing over into traditional Western medicine.