Most people aren't too concerned about their Vitamin D level. Those of you who have gotten it checked were likely told that your level is just fine. The range of normal used to be anywhere from 30 to 100 ng/mL, but the latest research suggests that somewhere closer to 50-80 ng/mL is optimal. Why is it so important? Besides helping with bone growth for adults and children, a good Vitamin D level helps regulate the immune system and the neuromuscular system. Vitamin D also plays major roles in the life cycle of human cells.
Since most people either don't go out in the sun enough, or lather on sunscreen, they don't get enough Vitamin D for your body to make it on its own. My suggestion? Get your Vitamin D level tested next time you go in for blood work. If you're under 50 ng/mL, talk to your doctor about starting a daily supplement ASAP!