Intestinal microbiota metabolism of l carnitine, a nutrient in red meat, promotes atherosclerosis Nature Medicine TMAO: The Gut Metabolite Linking Red Meat to Cardiovascular Disease Frontiers Effects of choline metabolitetrimethylamine N oxide on immunometabolism in inflammatory bowel disease Could a mitochondrial metabolite known as acetyl L carnitine (LAC) yield a new biomarker for depression and potential new therapies? Dr. Carla Nasca, an @nyugrossman assistant professor of psychiatry and of neuroscience and physiology,