Vitamin D refers to the group of the fat- soluble steroids which helps in the absorption the calcium, minerals and phosphates. Vitamin D is directly produced in the body by the exposure of sunlight, other sources includes cod liver oil, sea food, dairy products, cereals, egg and mushrooms etc. The main use of vitamin D in the body is to bone formation, mineralization, growth, and reduce inflammation. Vitamin D is also useful in the strengthening of the immune system and muscle strength. Vitamin D deficiency means low amount of serum Vitamin D i.e.