The gut microbiome in coronary artery disease and heart failure: Current knowledge and future directions eBioMedicine Frontiers The effect of L carnitine supplementation on lipid profile in adults: an umbrella meta analysis on interventional meta analyses New study links L carnitine in red meat to heart disease Harvard Health Cleveland Clinic researchers have discovered a connection between elevated blood levels of TMAO (trimethylamine N oxide)a byproduct of gut bacteria digestion of nutrients found in red meat and other animal productsand a higher