Intestinal microbiota metabolism of l carnitine, a nutrient in red meat, promotes atherosclerosis Nature Medicine Identification of TMAO producer phenotype and hostdietgut dysbiosis by carnitine challenge test in human and germ free mice Gut A Review of The Contribution of Gut Dependent Microbiota Derived Marker, Trimethylamine N oxide (TMAO), in Coronary Artery Disease Current Research in Nutrition and Food Science Journal Carnitine, Choline, Cancer and Cholesterol: The TMAO Connection YouTube