Studies touting omega-3 as the holy grail of health are hardly new — the fatty acid found in fish, walnuts and flax seed has long been cited to lessen health risks ranging from stroke to psoriasis.

http://news.adventist.org/data/2008/1201019628/index.html.en 

Researchers at Cedars-Sinai Medical Center’s Department of Psychiatry and Behavioral Neurosciences to examine whether DHA and EPA are effective in treating depression.

http://www.newswise.com/articles/view/536324/

Clinical trials suggest that fish oil can fend off a variety of ailments, but the omega-3 doses used in the studies have varied widely.

http://online.wsj.com/article/SB119975627038373627.html?mod=googlenews_wsj