BMJ  2006;332 (1 April), doi:10.1136/bmj.332.7544.0-b

Benefits of omega 3 fats may be in doubt

Omega 3 fats may have no effect on total mortality, combined cardiovascular events, or cancer. Hooper and colleagues (p 752) carried out a meta-analysis of randomised control trials and cohort studies of long chain and shorter chain omega 3 intake for at least six months in adults with or without risk factors. Trial results were inconsistent, and the study's pooled estimates showed no strong evidence of reduced mortality or cardiovascular events in participants taking additional omega 3 fats. However, they also showed no increased risk of cancer or stroke (suspected hazards) with higher omega 3 intake.

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Relevant Article

Risks and benefits of omega 3 fats for mortality, cardiovascular disease, and cancer: systematic review

Lee Hooper, Rachel L Thompson, Roger A Harrison, Carolyn D Summerbell, Andy R Ness, Helen J Moore, Helen V Worthington, Paul N Durrington, Julian P T Higgins, Nigel E Capps, Rudolph A Riemersma, Shah B J Ebrahim, and George Davey Smith
BMJ 2006 332: 752-760. [Abstract] [Full Text] [PDF]