**1. Introduction**

Human body is a complex matrix that requires various components for its healthy functioning. Vitamins and minerals are crucial elements that are often obtained from one's diet; these are referred to as micronutrients. Most of the latter are not produced by the human body and an unbalanced diet could inevitably lead to various nutrient deficiencies that could pose dramatic health risk for the human body that if severe enough could lead to death. Nutrient deficiency could be a direct effect of the changing eating patterns, but mostly due to poverty and lack of access to proper food especially in low- and middle-income societies. For this reason, studies and research were directed toward fortifying consumed food with vitamins that are most likely to be deficient and their deficiency could pose tremendous health problems. One of the most popular nutritional deficiencies in Lebanon and the Middle East is vitamin D deficiency. Due to the high frequency of vitamin D deficiency in Middle East and Lebanon, it is essential to find a product that is widely consumed among the population and provides a good source of vitamin D regarding its stability. Dairy products are one of the most famous consumed foods in our society, which is why it was chosen to be fortified with vitamin D.
