( uged their level of depression. T...)Omega-3 Fatty Acids Affect Risk of Depression, Inflammation,Health

uged their level of depression.

The analysis showed that participants who had much more omega-6 -- compared to omega-3 -- fatty acids, and who also were reporting more symptoms of depression, had much higher levels of IL-6 and TNF-alpha, two cytokines which enhance inflammation.

“The data suggest that higher depression and a poorer diet in terms of omega-3 can work together to promote inflammation. Other researchers have shown that clinically depressed people -- those with more severe depression -- often have lower omega-3 levels in their blood, and several studies have shown that supplementing diets with omega-3 improves depression,” Kiecolt-Glaser said, although the reason isn't clear.

“People who are depressed don't eat well, or it might be that there is something about depression that affects how well people process such foods.”

In recent years, research has shown that an increase in omega-3 fatty acids in the diet has specific health benefits, especially in patients with depression, cardiovascular disease and inflammatory and autoimmune diseases.

Martha Belury, an associate professor of human nutrition, endocrinology, diabetes & metabolism at Ohio State and co-author of the study, said the design of the study was important.

“We looked at people who were experiencing real depression, not those whose depression arose as a part of some experiment, and we could clearly see a relationship between lower omega-3 fatty acids and certain markers of depression and inflammation.”

Belury said that current recommendations allow up to two servings each week of cold-water fish – the best source of omega-3 – such as salmon or trout. This would not apply to pregnant women, she said, where concerns are greater about the heavy metal contamination such fish might contain. Omega-3 is also available as nutritional supplements.

“This study has shown that even in people who did not take sup
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