Vitamin C has mainly three effects on the body. It up-regulates different collagen genes, it’s an antioxidant, and it competes with glucose at the glut-4 receptor. However, sun exposure, vitamin A (animal: retinol), and vitamin K2 (animal: MK4) also up-regulates these collagen genes and many more, rendering vitamin C unnecessary for collagen production (skin, hair, nails, joints, etc.). So, you can only get scurvy if you lack these fat-soluble vitamins. If you get these … Continue reading More on Skin Care and the Misinformation About Vitamin C