Vitamin D is an extremely important vitamin that has many important functions throughout your body and the deficiency of vitamin d shows vitamin d deficiency symptom. Vitamin d made by the body through sunlight and certain foods but sometimes the body lack vitamin d and symptom of vitamin d deficiency appear like fatigue & tiredness, bone and back pain, easily getting infected, and many more. So if you want to know more about what are symptoms of vitamin d deficiency, then go to our video and unleash the information on symptoms vitamin d deficiency.