Vitamin D is produced naturally in the skin with the aid of sunlight. The use of creams with UV filters in the summer and insufficient exposure to sunlight in the autumn, winter and spring means that the synthesis of vitamin D in the skin is insufficient.Vitamin D helps in maintaining healthy teeth and bones. By supporting the correct absorption and use of calcium and phosphorus, it contributes to maintaining the correct level of calcium in the blood. In addition to its positive effects on teeth and bones, vitamin D also aids in the proper functioning of the immune system and muscles.