Vitamin A – discovery, metabolism, receptor signaling and effects on bone mass and fracture susceptibility

RT @tao_lin3: Vitamin A reduces bone density, weakening/shrinking bones, at low and high doses in rats/people. Normally, weight "stimulat…

Vitamin A reduces bone density, weakening/shrinking bones, at low and high doses in rats/people. Normally, weight "stimulates bone formation" but this is "robustly inhibited by ARTA"—all-trans retinoic acid, which our bodies make from vitamin A. https:/