Including omega-3 fatty acids in our diets helps protect against cardiovascular disease and other chronic diseases. The findings of a study published in the January 17, 2006 issue of Circulation, the journal of the American Heart Association, show that consuming even more omega-3s leads to an even greater reduction in the risk of coronary heart disease. Researchers in Japan followed 41,578 men and women aged 40 to 59 who did not have cardiovascular disease or cancer upon enrollment, from 1990-1992 to 2001.