Autoimmune Diseases Uncovered: The Controversial No. 1 Deficiency - The Root Cause or Just a Hypothesis? Introduction Autoimmune diseases are a group of chronic diseases that affect millions of people worldwide. They are characterized by the immune system attacking healthy cells and tissues in the body, leading to inflammation and tissue damage. The causes of autoimmune diseases are not fully understood, but scientists have identified several potential triggers, including genetics, environmental factors, and vitamin deficiencies. In recent years, vitamin D deficiency has emerged as a leading cause of autoimmune diseases. Vitamin D is a crucial nutrient that plays a role in immune system regulation, and studies have shown that low levels of vitamin D are associated with an increased risk of autoimmune diseases. In this article, we will explore the link between vitamin D deficiency and autoimmune diseases, the potential causes of vitamin D deficiency, and the best remedies for autoimmun