Frontiers The important role of ferroptosis in inflammatory bowel disease Natural approaches for the management of ulcerative colitis: evidence of preclinical and clinical investigations Natural Products and Bioprospecting Springer Nature Link Oxidative Stress in the Pathogenesis of Crohn's Disease and the Interconnection with Immunological Response, Microbiota, External Environmental Factors, and Epigenetics How Keeping Glutathione Levels Up Can Benefit Your Health & Your Vitamin D Status GrassrootsHealth PUFA Induced Metabolic Enteritis as a Fuel for Crohn's Disease Gastroenterology