Magnesium is the nutrient we all need to get more of. It’s believed that at least 80% of the population suffer from magnesium deficiency, without even knowing it. If you don’t know how important getting enough magnesium is to your health, you may be missing out on some important health information. Not sure what to look out for? Here’s 15 signs and symptoms you’re probably magnesium deficient and what to do about it.