You hear all the talk about increasing your daily natural vitamin D3 intake from 400 mg to at least 1,000 mg to prevent arterial calcification, bone loss, and certain diseases. The media says so many diseases could be due to too low vitamin D3 intake. But what happens if you have a certain gene variation that instead causes vitamin D3 to calcify your aortic valves? There is some early research that high amounts of vitamin D, such as 2,000 iu, taken daily for many months or years may lead to ca