Revisiting the Role of Carnitine in Heart Disease Through the Lens of the Gut Microbiota Cheap protein = expensive gut problems. Here's what to look for on the label before you buy Intestinal microbiota metabolism of l carnitine, a nutrient in red meat, promotes atherosclerosis Nature Medicine JCI l Carnitine in omnivorous diets induces an atherogenic gut microbial pathway in humans Association between red meat consumption and the risk of cardiovascular disease: An important role of L carnitine metabolites Prevention Observatory of the Montreal Heart Institute