Supportive but not conclusive research shows that consumption of EPA and DHA omega-3 fatty acids may reduce the risk of coronary heart disease.The Natural Fish Oil Concentrate used in this softgel is manufactured under strict quality control standards.&ampnbsp; It is tested to be free of potentially harmful levels of contaminants (i.e. mercury, heavy metals, PCB's, dioxins, and other contaminants). &ampnbsp;Those who experience nausea or reflux from other fish oils should find this enteric coated, odor controlled softgel easier to tolerate.