Intestinal microbiota metabolism of l carnitine, a nutrient in red meat, promotes atherosclerosis Nature Medicine TMAO biosynthesis. L carnitine and choline are derived from the diet Download Scientific Diagram Pathobiological Relationship of Excessive Dietary Intake of Choline L Carnitine: A TMAO Precursor Associated Aggravation in Heart Failure in Sarcopenic Patients Frontiers Gut Metabolite Trimethylamine N Oxide in Atherosclerosis: From Mechanism to Therapy Simultaneous quantification of trimethylamine oxide and its precursors from gut microbial metabolic pathway