Decoding the Gut-Brain Axis: A Two-Step MR Study Unmasking Causal Microbes Across Neurodegenerative and Psychiatric Disorders
Background & Objective: Observational studies link gut microbiome dysbiosis to a spectrum of brain disorders, yet confounding and reverse causation impede causal inference. The gut-brain axis represents a paradigm shift, but clinical translation is stalled by a "causality conundrum." To investigate causal relationships...