TMAO and Heart Disease A Serious Heart Marker Functional Medicine University The Leader in Online Training in Functional Diagnostic Medicine Simultaneous quantification of trimethylamine oxide and its precursors from gut microbial metabolic pathway Full article: Gut microbes with the gbu genes determine TMAO production from L carnitine intake and serve as a biomarker for precision nutrition Carnitine, Choline, Cancer, & Cholesterol: The TMAO Connection Linking anaerobic gut bacteria and cardiovascular disease Nature Microbiology Characterization of TMAO productivity from carnitine challenge facilitates personalized nutrition and microbiome signatures discovery Microbiome Springer Nature Link