What Is Deficiency Diseases Lack of carbohydrates, proteins, vitamins, or minerals in the diet can cause diseases. Diseases that are caused due to the lack of nutrients in the diet are called deficiency diseases. Deficiency diseases cannot be transmitted from one person to another. Deficiency of Carbohydrates Carbohydrates are the main energy sources. Lack of carbohydrates … [Read more...] about What Is Deficiency Diseases