Full article: Trimethylamine N oxide formation, the bacterial taxa involved and intervention strategies to reduce its concentration in the human body Our researchers discovered a link between TMAO and a higher risk for abdominal aortic aneurysm. TMAO is created by gut bacteria as it digests certain nutrients found in red meat and other Trimethylamine N Oxide (TMAO) as a Biomarker Springer Nature Link Trimethylaminuria (Fish Odor Syndrome or TMAU)