**6. Conclusion**

After referring to various studies considering fortifying foods and dairy products with vitamin D, it is proven that dairy product vitamin D fortification is an effective strategy to diminish the prevalence and incidence of vitamin D deficiency among populations. This is because this method is cost-effective regarding its positive effect on public health and its impacts with minimal sensorial changes including flavor and order. Dairy products have been shown to be a suitable food type to be fortified with vitamin D. Milk and many cheese products, and yogurt are fortified with vitamin D and have shown to be stable and an effective source of vitamin D, and this is why we can consider other types of dairy products to be fortified with vitamin D like Labneh, in which further research will be done in order to test for stability of vitamin D and the most appropriate form to be used in it. According to the appropriate form of vitamin D used in dairy products, liposomes of vitamin D are effective for cheddar cheese fortification. This method proves the effectiveness and liposomes of food fortification that has been followed for years, a strategy that tremendously leads to decreasing the burden of nutrition deficiency among populations especially in developing countries. In fact, public awareness stays a must in promoting education about vitamin D deficiency, its symptoms, risk factors, and causes.
