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| Whats the Difference between omega-3 and omega-6? | |
Whats the difference between omega-3 fatty acids and omeg...
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VitaNet ® Staff | 11/09/05 |
Date:
November 09, 2005 09:41 AM
Author: VitaNet ® Staff
(support@vitanet.net)
Whats the difference between omega-3 fatty acids and omega-6?
Omega-3 is the name of a group of polyunsaturated fatty acids (PUFA). There are two main families of PUFA: Omega-3 (N-3 PUFA) and omega-6 (N-6 PUFA).
Omega-3 (n-3 PUFA)
The Predominant sources of omega-3s are fish oil and vegetable oils. There are three types of omega-3 fatty acids:
1. alpha linolenic acid (LNA) is an important plant-based source of omega-3s, including such foods as tofu, canola oil, walnuts and flaxseed.
2. eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are very long-chain fatty acids obtained from cold-water ocean fish such as sardines, herring, mackerel, albacore tuna and salmon – hence, fish oil.
Omega-3s are required for normal human health. They affect many physiological processes including cognitive function, visual acuity, immunosuppressive and anti-inflammatory actions, anti-thrombotic and anti-arrhythmia activities along with having major effects on whole body glucose and lipid metabolism.
Omega-6 (n-6 PUFA)
Vegetables are the main source of omega-6s. There are two main omega-6 fatty acids:
1. arachidonic acid(AA)
2. Linoleic acid (LA)
The most important omega-6 is LA. This is found in large amounts of western diets in corn oil, safflower oil and soy bean oil.
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