Here's more great benefits of Vitamin D: the vitamin aids calcium absorption, to keep your bones strong and keep osteoporosis at bay.
If your muscles and joints hurt after a hard workout or a long day at work, your body could need more than just an aspirin. Those aches & pains could be a sign that you're not getting enough Vitamin D. Stewart B. Leavitt, Ph.D, says that "Vitamin D aids in muscle tissue growth and calcium absorption. Without enough calcium, the outer layer of your bones can become soft and spongy, making them more susceptible to painful stress fractures and over time, osteoporosis and arthritis."
For the safety of your bones, consume at least 1,000 IU of Vitamin D daily.
Because the primary source of Vitamin D is unprotected sun exposure, which may raise the risk of skin cancer, Leavitt recommends taking a Vitamin D supplement daily. "Look for brands with D3, which is absorbed easier than D2."
If you take care of those bones, they will take care of you later.
(from SHAPE magazine, March 2009, Volume 28, #7)