Measurement of mercury levels in concentrated over-the-counter fish oil preparations: is fish oil healthier than fish?

Fish consumption has been associated with a decreased risk of coronary artery disease. Recent studies have illustrated that the high mercury content in cold-water fish may negate the cardiovascular benefits of fish meals. Fish oils have similar antiatherogenic properties to fish, and similar studies should be performed to determine the level of mercury in fish oils. To determine the concentration of mercury in 5 over-the-counter brands of fish oil. The levels of mercury in the 5 different brands of fish oil ranged from nondetectable (