If you are plagued with milk allergies, don’t enjoy the sunshine, or take a strict vegan diet, you run the risk of vitamin D deficiency. A major cause of vitamin D deficiency is having insufficient exposure to natural sunlight. This can be the result of following an indoor lifestyle and staying inside throughout the day. There are quite serious health risks associated with this deficiency. Therefore, if you have a deficiency of vitamin D, read on for the symptoms and cure for the same.