Tryptamine Microbiota-Deregulated Aminoacyl-tRNA Biosynthesis: A Conceptual Evolution of the Role of Microbiota Tryptamine in Human Diseases provides a detailed investigation into tryptamine, its underlying mechanisms, and metabolism across multiple diseases. The book explores key concepts of tryptamine, its biosynthetic pathways, and its influence in disease, specifically focusing on the Alzheimer’s disease-associated gut bacterial sequence (ADAS). Various neurodegenerative conditions are covered alongside cancer, diabetes, infections, and chromosomal aberrations. Additionally, a chapter on gut tryptamine in domestic and agricultural animals is included. The book closes with case studies involving FDG-PET imaging in the context of tryptamine-treated mouse models and Alzheimer’s disease patients. This book elucidates the implications of the gut microbiota-mediated tryptamine metabolism for human health, sharing insights into disease etiology, mechanisms, testing, prevention, and treatment. It is an ideal reference for researchers across the biomedical sciences.