This presentation explores the connection between food, the gut microbiome, and chronic disease, introducing a framework called the microbiome-mitochondria axis. Dr. Damman explains how modern, ultra-processed foods strip away key bioactive components—fibers, phytonutrients, bioactive fats, and ferments (the "four Fs")—that the microbiome depends on to produce molecules essential for mitochondrial and overall cellular health. He also addresses nutrition-related questions specific to the transplant community, including fiber tolerance, fermented foods, probiotics, and GI symptom management.