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Flax oil and fish oil are both sources of omega-3 essential fatty acids. However, the two types of oils are different in the types of omega-3 fatty acids they provide.
 Fish oil can be obtained from eating fish or by taking supplements. Fish that are abundant in the beneficial oils known as omega-3 fatty acids include mackerel, tuna, salmon, sturgeon, mullet, blue-fish, anchovy, sardines, herring, trout and menhaden. They provide about 1 gram of omega-3 fatty acids in every 3.5 ounces of fish. Fish oil supplements are usually made from mackerel, herring, tuna, halibut, salmon, cod liver, whale blubber or seal blubber.
Fish oil is most often used for conditions related to the heart and blood system. Some people use fish oil to lower blood pressure or triglyceride levels. Some evidence shows that eating fish improves weight loss and decreases blood sugar in overweight people. Preliminary research also shows that taking a specific fish oil supplement significantly decreases body fat when combined with exercise. The proper dosage of fish oil for achieving fat loss is 1.5 to 2.0 grams per day (although some research suggests you should consider body weight when choosing the dosage, so a bigger person might goes as much as 3.0 grams).
International Journal of Obesity, 31, 1560-1566 , Thorsdottir, I. et al, (2007). |
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