According to the article I read Vitamin D isn't just good for your bones. A daily dose of 1,100 IU along with calcium decreases the risk for all kinds of cancer by 60 percent in post menopausal women. According to Joan Lappe, R.N., Ph.D, a professor of nursing and medicine at Creighton University in Omaha (where the breaking research on the vitamin is ongoing) says she was surprised at how effective this inexpensive, easy, safe regimen turned out to be. She takes D3 (the kind the body utilizes better) every day. So people maybe you want to try this regimen as well or add this thing to your daily ritual. Staying healthy is important .