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 Gut microbiota metabolism of l carnitine and cardiovascular risk Atherosclerosis How Does Carnitine Support Hashimoto's? Dr. Izabella Wentz The Role of Lipids and Lipoproteins in Atherosclerosis Endotext NCBI Bookshelf