As trendy nutrition supplements continue their migration from fringe wellness markets to ever more profitable mainstream distributors, consumers and health organizations alike have begun questioning the health standards of some of the industry's most lucrative products. Latest on the list? Fish oils. A recent California lawsuit filed against five major distributors of fish oil pills has catapulted the popular omega-3 supplement to the center of public health discourse, with the debate hinging on the extent to which high levels of the compound contaminant polychlorinated biphenyl (PCB) and other impurities can be found in some of the most popular over-the-counter fish oil supplements. Read more at www.huffingtonpost.com