A lot of research has been performed over the past twenty years which has concluded that fats and cholesterol play a huge role in the development of heart disease, which happens to be the number one killer in the United States. It has been found that certain types of cholesterol in our blood can eventually lead to a buildup of plaque in the arteries, which restricts the blood supply to the heart and sets us up for a potential heart attack.
These researchers found it ironic when looking at the Greenland Eskimo, whose diet is rich in animal fat, but who is almost entirely free from coronary artery disease. Studies have proved that high levels of DHA and EPA that are found in the fish, seal, and whale diet of the Eskimo is what protects them from the heart disease that many people in the United States battle.
In order to improve cardiovascular health, DHA must perform many tasks. Increased DHA and EPA levels have been shown to lower total serum cholesterol. It has also been shown to selectively lower LDL cholesterol while elevating protective HDL cholesterol.