Fish oil is conducive to good health. Evolutionary biologists and anthropology scientists believe that for much of human evolution, humans have lived in coastal areas of this planet. It can be concluded that they derived nutrition from seafood like shellfish. Recent studies have conclusively established that the human brain is composed of certain oils which are mainly found in fishes.

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.

Probably the most vital components of fish oil are omega 3 fatty acids. The human body is not able to make omega 3. Omega 3 are generally not found in plants and when they are found in plants it is in very small amounts. The development of an unborn child's brain and eyes are dependent upon the availability of omega 3; for this reason it is vital that expecting mothers get enough omega 3.

Omega 3 deficiency could lead to many health problems in human beings. Research studies by medical professionals have suggested that Attention Deficit Disorder, asthma and other allergies could be linked to less intake of omega 3. Some scientists have observed that a low consumtion of omega 3 by pregnant woman could give birth to children who might have poor hand-eye coordination, low IQ and poor social skills.

Salmons, sardines and herrings are the fishes rich in omega 3 fatty acids. Heavy metals and toxic waste due to water pollution can accumulate inside fishes. Therefore, consuming these fishes in large quantities is not recommended. Another reason why it is not recommended is the high levels of retinol present in their livers. An active form of Vitamin A, retinol can be dangerous to humans if consumed in high doses.

The benefits of omega 3 are only experienced in the recommended daily amount by about 2% of the population. This is a frightening statistic that needs to be rectified. One reason the supplements are avoided is the fear of a fishy taste. For those that dislike the taste of fish oil supplements, capsule form is available. Be cautious and make sure the supplements are mecury free. Other dangerous metals should have been removed as well. Purification of the supplements helps the body digest them more efficiently.

Fish oil controls blood serum cholesterol and helps in treating high blood pressure, prevention of heart disease and neurological conditions such as depression and memory loss. It also boosts resistance to allergies including asthma and Attention Deficit Disorder. An important ingredient, called omega 3 benefits pregnant women in helping the unborn child's proper development of brain and eyes. This fatty acid is extracted from sardines, salmons and herrings. Many companies market the oil supplements in capsules. Consumers should look for those that are certified as free from mercury and other harmful metals.