Differential effects of oral and intravenous L carnitine on serum lipids: is the microbiota the answer? TMAO and Heart Disease A Serious Heart Marker Functional Medicine University The Leader in Online Training in Functional Diagnostic Medicine 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 TMAO biosynthesis. L carnitine and choline are derived from the diet Download Scientific Diagram TMAO: Why It Increases & Factors That May Reduce TMAO levels SelfDecode Labs