As registered dietitian nutritionist, Natalie Butler, RDN, L.D., previously wrote for mindbodygreen, fatigue and exhaustion are generalized symptoms of a magnesium deficiency. “You may attribute your tiredness to stress, poor sleep, or a host of other reasons and not realize just how much nutrition is playing a role,” she says, adding, “This is becauseย magnesium is requiredย for the production of energy. If the body has inadequate access to magnesium, then energy production suffers, leaving you prone to fatigue.”