The worst foods for gut health and how they disrupt your entire system
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Dec 06, 2025 · 9 min read
Ultra-processed foods high in added sugar, artificial sweeteners/additives, and unhealthy fats can shift your microbiome toward dysbiosis in as little as 24 hours, erode the protective mucosal barrier, and let bacterial toxins leak into the bloodstream to fuel systemic inflammation. Here’s the clinical evidence for which foods do the most damage—and how to rebuild a ...