Tufts University confirmed my hypothesis that vitamin A protects against vitamin D's induction of renal calcification (kidney stones) by normalizing the production of vitamin K-dependent proteins in December, 2008, without citing my hypothesis or telling me they had confirmed it.
Chris, the "Does Vitamin A Cause Osteoporosis" link is broken. Thanks.
All links to westonaprice.org are broken. If you search the title on that website you should find it quickly.