Characterization of TMAO productivity from carnitine challenge facilitates personalized nutrition and microbiome signatures discovery Microbiome Springer Nature Link Low Bioavailability and High TMAO Production: Novel Insights Into Acetylcarnitine and Carnitine Metabolism KrimsDavis 2025 Molecular Nutrition & Food Research Wiley Online Library Dietary allicin reduces transformation of L carnitine to TMAO through impact on gut microbiota ScienceDirect Advances in Clinical and Experimental Medicine Gut Microbiota Derived TMAO: A Causal Factor Promoting Atherosclerotic Cardiovascular Disease? Revisiting the Role of Carnitine in Heart Disease Through the Lens of the Gut Microbiota