In this issue of JAMA, Rimm and coworkers1 at the Harvard School of Public Health report that "fiber, independent of fat intake, is an important dietary component for the prevention of coronary disease." Their conclusion is based on observations within a cohort of more than 40 000 male health professionals followed up for 6 years to an end point of either myocardial infarction (MI) or coronary death. If correct, the finding is important because it could provide the basis for nutritional advice that will affect many groups in our society, including average Americans, practicing physicians, and the food industry, among others. Some might even interpret it as justification for advising Americans to eat more high-fiber food without necessarily making other dietary modifications.
See also pp 447.
Their conclusion all but implies a causal relationship and invites a low-fiber diet to take its place alongside cigarette smoking, high serum cholesterol,
Wynder EL, Stellman SD, Zang EA. High Fiber IntakeIndicator of a Healthy Lifestyle. JAMA. 1996;275(6):486-487. doi:10.1001/jama.1996.03530300070044