omega-3 fatty acid


Also found in: Dictionary, Thesaurus, Legal, Encyclopedia, Wikipedia.

omega-3 fatty acid

n.
Any of several polyunsaturated fatty acids that are essential for human metabolism, have anticoagulant properties, and are found in leafy green vegetables, vegetable oils, nuts, and fish such as salmon and mackerel. Increasing dietary intake of omega-3 fatty acids can decrease serum concentrations of triglycerides and LDL cholesterol while increasing HDL cholesterol.

omega-3 fatty acid

a fatty acid with a double bond located at the third carbon atom away from the omega (methyl) end of the molecule. Major sources are cold-water fish and vegetable oils. Omega-3 fatty acids, such as eicosapentaenoic acid and docosahexaenoic acid, appear to have protective functions in preventing the formation of blood clots and reducing the risk of coronary heart disease. See also essential fatty acid.

omega-3 fatty acid

, ?-3 fatty acid
Any of the long-chain polyunsaturated fatty acids found in the oils of some saltwater fish, and in canola, flaxseed, walnuts, and some vegetables. These acids include eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). Alpha-linolenic acid (found in flaxseed and chia) can be metabolically converted to omega-3 fatty acids in the body. People whose diets are rich in omega-3 fatty acids have a reduced incidence of cardiovascular disease. Synonym: n-3 fatty acid
See also: acid
References in periodicals archive ?
Omega-3 fatty acids have been shown to reduce inflammation and oxidative stress on cells and both of those processes damage nerve tissue and have been linked with ALS.
However, these preparations provide pharmacological amounts of omega-3 fatty acid EEs and are used under strict supervision by a physician.
Lead author Akira Sekikawa, associate professor of epidemiology at Pitt Public Health, said that previous studies investigated substantially lower intake of omega-3 fatty acids than what people in Japan actually get through their diet.
Other nutrients besides omega-3 fatty acids were not associated with different blood levels of beta-amyloid.
This again suggests that further studies are needed to better understand the specific formulations, dosages and markers of effectiveness for omega-3 fatty acid supplementation.
Ongoing studies have led to the premise that a balance of omega-6 and omega-3 fatty acids is necessary to maximize the benefits of these fats.
In fact, the benefits of omega-3 fatty acids for cardiovascular disease are so well demonstrated that the American Heart Association has published statements since 1996 recommending increased fish and/ or omega-3 supplement intake.
John Patience and Denise Beaulieu at the Prairie Swine Centre in Saskatoon, Saskatchewan on a series of four projects feeding flaxseed to pigs to enrich pork with omega-3 fatty acids.
Despite the lack of benefit from an omega-3 fatty acid supplement in this large study, some experts said it is premature to change existing American Heart Association guidelines that call for a high level of oily fish consumption in people without documented coronary heart disease, and a high level of either oily fish consumption or a daily omega-3 fatty acid supplement in patients with documented coronary heart disease (Circulation 2006;114:82-96).
The optimal dose of omega-3 fatty acid to prevent atrial fibrillation is unknown," Dr.
The investigators believe that omega-3 fatty acid treatment also may lower serum triglycerides.