Recently there was an article saying that Vitamin D3 is not useful in preventing osteoporosis or fractures. This is true. What the article does not say is that bioidentical estrogen replacement prevents and reverses osteoporosis. And that high levels of Vitamin D3 help to prevent some forms of cancer, infections, and even multiple sclerosis. If high doses of Vitamin D3 are taken with Vitamin K2 (MK7), there is no incidence of increased formation of kidney stones. See us to evaluate your vitamin D level.