Like ""Common symptoms of magnesium deficiency are sore muscles, cramps, twitches, and many others. Here are a couple of articles that will bring you up to speed on magnesium." "and vitamin D all increase the body's need for magnesium" Wow, I didn't realize that. That could explain a lot of the problems with my legs I've been having lately. My vitamin D level was almost zero, so the doctor put me on a prescription vitamin D and I've been taking it for a while. I also eat a lot of spinach and take a diuretic. Lately I've been having problems with cramps, twitches and soreness in my legs. They even checked me for restless leg syndrome thinking maybe that was it, but it wasn't. Maybe it is just low magnesium! "