Dietary allicin reduces transformation of L carnitine to TMAO through impact on gut microbiota ScienceDirect Gut microbe derived metabolite trimethylamine N oxide activates PERK to drive fibrogenic mesenchymal differentiation: iScience Intestinal microbiota metabolism of l carnitine, a nutrient in red meat, promotes atherosclerosis Nature Medicine Linking anaerobic gut bacteria and cardiovascular disease Nature Microbiology