Overproduction of Vitamin D
My nephew-in-law states that he has a unique medical condition where his body produces too much vitamin D. He says that when this happens, it feels like weights have been added to his arms and legs. He states that he has to go lay down and take it easy until the vitamin levels go back to normal. I personally doubt he's being honest, as I have not been able to find any information about this. What do you think?