At your age, doctors should routinely test for a
vitamin D deficiency as your skin is now converting less
vitamin D from sunlight.
For the past 80 years it was believed that vitamin D3 was only important to the body for regulating calcium and protecting the bones. However hundreds, if not thousands, of studies now show this vitamin (technically a steroid hormone) plays a vital role in health.
Vitamin D deficiency seriously impacts 32 organs especially the heart and bones.