A vitamin D is one of the most important elements of modern nutrition and health preservation. Its role lies not only in strengthening bones but also in numerous other health benefits, such as supporting the immune system and reducing inflammation. However, most people are unaware that it is important to thoroughly inform themselves before taking vitamin D, as there is a risk of overdose with fat-soluble vitamins. Vitamin D is produced naturally in the skin under the influence of sunlight, but various factors, such as weather and daily routines, affect the adequate production of vitamin D. During the spring and summer months, it is essential to spend enough time outdoors…