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High consumption of red meat might be associated with excess risk for coronary heart disease (CHD) and cardiac-related mortality, but the evidence has been equivocal (e.g., NEJM JW Gen Med Nov 15 2019 and Ann Intern Med 2019; 171:756; NEJM JW Gen Med Jun 27 2019; [e-pub] and BMJ 2019; 365:2110). Many previous studies failed to specify sources of energy in comparator diets, which also might have been atherogenic (i.e., high in other sources of saturated fats).
Researchers followed more than 40,000 U.S. male health professionals (average age at baseline, 53) for 30 years, starting in 1986; they collected detailed food frequency data every 4 years and data on cardiovascular risk factors, lifestyle, and medical events biennially. Higher total in…