Full article: Gutheart axis: emerging therapies targeting trimethylamine N oxide production Gut microbiota metabolism of l carnitine and cardiovascular risk Atherosclerosis JCI l Carnitine in omnivorous diets induces an atherogenic gut microbial pathway in humans Elucidation of an anaerobic pathway for metabolism of l carnitinederived butyrobetaine to trimethylamine in human gut bacteria PNAS Intestinal microbiota metabolism of l carnitine, a nutrient in red meat, promotes atherosclerosis Nature Medicine