The Role of Gut Microbiota on Cholesterol Metabolism in Atherosclerosis New study links L carnitine in red meat to heart disease Harvard Health Frontiers The effect of L carnitine supplementation on lipid profile in adults: an umbrella meta analysis on interventional meta analyses L carnitine Supplementation Significantly Improves Lipid Profiles Natural Health Research 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