Vitamin D Deficiency can have no symptoms and severe consequences, as low Vitamin D levels are associated with health issues and disease.: Glucose 6 phosphate dehydrogenase deficiency TCML The Charsi of Medical Literature Glutathione Deficiency in Cardiac Patients Is Related to the Functional Status and Structural Cardiac Abnormalities PLOS One Role of Antioxidant Vitamins in Oral Submucous Fibrosis: A Narrative Review Cureus