Vitamins are essential for maintaining good health – one of the seven nutrients. Vitamins are organic compounds. But this organic compound is not a material that makes up the body or a source of energy like proteins, sugars and fats. Vitamins as such are neither a raw material for body tissues nor a source of energy in the body. What are vitamins doing in the body? The main role of vitamins is to participate in the regulation of the body’s metabolism. Vitamins are small organic compounds that are essential for normal life activities, including promoting growth and development, maintaining physiological functions, and regulating the metabolism of substances. According to their solubility, vitamins can be divided into two categories: water-soluble including vitamin B and vitamin C, and fat-soluble including vitamins A, D, E and vitamin K. Many vitamins cannot be synthesized in the body or are not synthesized enough and must be taken from food to meet the body’s needs, so vitamins are one of the important food nutrients. Some vitamins, such as vitamin D and vitamin B, can be produced in the skin or in the intestines. Insufficient intake of vitamins, impaired absorption, or increased body needs for vitamins may cause vitamin deficiency diseases, such as vitamin A deficiency can cause night blindness, vitamin B deficiency can cause tinea pedis, orchitis, anemia, vitamin C deficiency can cause scurvy, vitamin D deficiency can cause bone softening, vitamin E deficiency can increase the likelihood of habitual abortion and cardiovascular and cerebrovascular lesions Vitamin K deficiency can cause bleeding tendency, etc. Diabetic patients have an increased need for certain vitamins and often require exogenous supplementation, so diabetic patients often need to take appropriate amounts of vitamin B, C, etc.