Fish oil is oil that comes from the tissue of fatty fish, including salmon, tuna, and mackerel. It can also be produced by lake trout, herring, and sardines. This oil is of interest most people because it has been shown to provide a number of health benefits, and is recommended by many health authorities as part of a balanced diet. Fish oil contains omega-3 fatty acids, specifically docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA).
One of the health benefits linked to fish oil is a low risk of heart attack. Medical professionals often recommend that people eat fish that is rich in oil regularly to get the most benefit. There is also evidence that consuming the oil can reduce a person's risk of coronary heart disease as well.
Fish oil is also believed to be helpful for lowering and regulating cholesterol levels in the blood. Research has also shown a correlation between the consumption of the oil and lowered blood pressure. Though research is still underway, there is evidence to suggest that it may also benefit individuals dealing with lupus, arthritis, colitis, and asthma. Some experts believe that the oil may eventually be proven helpful in the prevention and treatment of certain cancers as well.
Not only has fish oil been shown to offer benefits in terms of physical health, but it may also be good for mental health, too. Many studies suggest that it may help to improve memory and concentration, as well as to combat depression. Some experts believe it may even be effective in treating bipolar disorder, attention deficit disorder (ADD), and schizophrenia.
Though many health experts recommend eating fatty fish to get the benefits unique to this oil, there is come concern that that the fish that provide the most benefit can also contain other, less healthy, substances. Certain types of fatty fish contain high levels of mercury and other toxins, which can be especially dangerous to pregnant women. To avoid the risk of consuming potentially dangerous contaminants, some people choose to use supplements instead of eating fish.