Flaxseed oil is rich in the A omega-3 fatty acid ALA (alpha-linoleic acid), while black currant, borage and evening primrose oils are good sources of the omega-6 fatty acid
The primary omega-6 fatty acid
in the diet is linoleic acid, which is found in corn, soybean, safflower, and sunflower oils.
1: Dietary sources and enzymatic conversion pathways of omega-3 and omega-6 fatty acid
Researchers studied four types of the most popular farm-raised fish--tilapia, catfish, Atlantic salmon and trout--and assessed their omega-3 and omega-6 fatty acid
Essential fatty acids are made up of omega-3 and omega-6 fatty acids
. The main omega-3 fatty acids in the central nervous system are eicosapentaenoate (EPA) and docosahexaenoate (DHA), and the main omega-6 fatty acid
is arachidonic acid.
After adjustment for HLA genotype, family history, caloric intake, and omega-6 fatty acid
intake, the risk for the condition was inversely associated with total omega-3 fatty acid intake, the investigators said (JAMA 2007;298:1420-8).
Sunflower, safflower, corn, and sesame oil are high in linoleic acid, an omega-6 fatty acid
that can interfere with DHA and EPA production.
The company promotes the oil as a more cost-effective and convenient source of the health-promoting omega-6 fatty acid
. Higher levels of GLA in seed oils offers significant opportunities for more readily achieving the health benefits of GLA.
High levels of an omega-6 fatty acid
called arachidonic acid were associated with a reduced risk of asthma and rhinitis at 16.
In one study, 37 patients with active rheumatoid arthritis were randomly assigned to receive, in double-blind fashion, borage oil (providing 1.4 g per day of the omega-6 fatty acid
gamma-linolenic acid) or placebo for 24 weeks.
EFAs are made up of omega-3 and omega-6 fatty acids
. The main central nervous system omega-3 fatty acids are eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA); the main omega-6 fatty acid
is arachidonic acid.
The study published in 'American Journal of Respiratory and Critical Care Medicine', lays out that families and health care providers may be able to protect children from harmful effects of indoor air pollution by serving a diet rich in omega-3 fatty acids while reducing foods rich in omega-6 fatty acids
such as soyabean oil and corn oil.