Vitamin D

Vitamin D has several important roles – for example, it helps control the amount of calcium and phosphate in your body, which are needed to keep your bones and teeth healthy. Having too little vitamin D (a deficiency) can damage the way your body absorbs calcium and phosphorus. In children, this can lead to rickets – a condition that can cause bone deformities, such as bowed legs. In adults, vitamin D deficiency can cause rickets (otherwise known as osteomalacia or weak bones), which can make bones painful and tender.