Recent studies have suggested that human brain is composed of lot of oils. The main source of these oils is found to be only fish. Hence it can be stressed that fish oil is very essential for human health and development. It is believed that our ancestors lived in coastal areas, which helped them to get much of their nutrition from fish, especially shellfish.

Consuming fish oil has a number of health benefits. This controls blood serum cholesterol thereby preventing cardio-vascular disease and as well as high blood pressure. Treatment for depression cases is also done using this oil. It is also claimed that this oil helps cases with mental problems, Alzheimer's disease and also improves people's memories.

Omega 3 fatty acids present in fish oil appeals the most to health researchers. These fatty acids are found in negligible quantities in vegetables and fruits and aren't produced within the human body. These fatty acids are essential for normal growth and development of fetus and therefore all pregnant women must take them in proper doses.

There are many health problems which have been associated with deficiencies in omega 3. Studies have suggested that asthma and other allergies as well as Attention Deficit Disorder may be linked to insufficient intake of omega 3. Other scientists have linked a low consumption of omega 3 by pregnant women to poor hand-eye coordination, low IQ and poor social skills in their children.

Although salmon, sardines and herring are excellent sources of omega 3 fatty acids, consuming a large quantity of fish could possibly contain a dangerous level of heavy metals from water pollution. Water pollution can accumulate in the bodies of fish. A large amount of vitamin A, which is found in fish livers, can be dangerous, and potentially fatal.

For this reason it is recommended that people take fish oil supplements. They are available in capsule form those who take exception to the taste. They should be certified free of mercury and other dangerous metals and many have been purified so that the body can assimilate them more easily. Omega 3 benefits human health in so many ways that it is frightening to learn that only 2% of the US population is getting the recommend daily amount.