artery 4Research appearing in the European Journal of Clinical Nutrition (2008 Dec;62(12):1426-31) looked at the effect fish oil supplementation had on blood vessel elasticity. The subjects of the study were 52 overweight Chinese patients with high blood pressure. They were randomly assigned to receive either a placebo or 3,000 milligrams of fish oil per day. After eight weeks the elasticity of the large arteries was improved in the group receiving the fish oil, but not in the placebo group.