Do You Have These Magnesium Deficiency Symptoms? 10 Reasons Why You Need More Studies show that up to 89% of all Americans are magnesium deficient. In fact, you just may be one of these magnesium deficient people and not even know it. In this podcast, I discuss the common magnesium deficiency symptoms. I also discuss 10 reasons why you need more magnesium. If you would rather not listen to this podcast to learn more about magnesium deficiency, here is a link to an article I wrote on magnesium deficiency.