Vitamin D is essential to bone health. It helps increase the absorption of calcium and phosphorous from food. Vitamin D also helps regulate the amount of calcium in the blood and helps to strengthen the skeleton.
Vitamin D3 is created by the action of sunlight (UV light) on the skin. A deficiency of Vitamin D can contribute to osteoporosis. Without Vitamin D, calcium will not be fully absorbed by the body.
Exposure to the sun can help your body produce Vitamin D. 6- 8 minutes per day in summer and 25 minutes per day in winter (check details with your health professional) is enough sunlight to produce Vitamin D. Vitamin D is also found in oily fish, eggs and dairy produce.
If you have a low Vitamin D level in your blood your doctor may suggest a Vitamin D supplement. This is sometimes combined with calcium in the same preparation.