Study reveals how red meat harms the heart. A species of gut bacteria, more abundant in red meat eaters, is key in turning a dietary nutrient called carnitine into TMAO which promotes blood clotting Characterization of TMAO productivity from carnitine challenge facilitates personalized nutrition and microbiome signatures discovery Microbiome Springer Nature Link Oxidation of trimethylamine to trimethylamine N oxide facilitates high hydrostatic pressure tolerance in a generalist bacterial lineage Science Advances Low Bioavailability and High TMAO Production: Novel Insights Into Acetylcarnitine and Carnitine Metabolism KrimsDavis 2025 Molecular Nutrition & Food Research Wiley Online Library