Supplementing with omega-3 fatty acids doesn’t do anything to reduce the future risk of heart-related events or overall death rates in previously diagnosed heart patients, according to a May 14, 2012, article in Archives of Internal Medicine.
This use of supplements is called secondary prevention. Taking supplements before onset of disease is primary prevention.
This study didn’t address whether overall consumption of omega-3 fatty acids, as in real food, is heart-protective.
If you’re a heart patient spending hard-earned money on omega-3 supplements, ask you doctor if you can spend your money on something else.