Eating oily fish containing long-chain omega-3 fatty acids may reduce systemic inflammation and lower the risk of cardiovascular disease.[9][10] Eating about 140 grams (4.9 oz) of oily fish rich in omega-3 fatty acids once per week is a recommended consumption amount.[9][10] Increasing intake of omega-3 fatty acids may slightly reduce the risk of a fatal heart attack,[10] but likely has little effect on the overall number of deaths from cardiovascular disease.[11]