Signs You May Have a Magnesium Deficiency

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Spotting a magnesium deficiency is notoriously difficult. This is because while 75% of the western world is likely not to be getting enough magnesium in their diet, the symptoms tend not to start presenting themselves until the problem is quite serious. This means that many people will never know that they are not consuming enough magnesium. I’m going to list some of the symptoms of magnesium deficiency, but do be aware that they can be tied to more conditions than just this, some conditions much more serious than a lack of magnesium in the diet.

Fatigue and Muscle Weakness

Often the first symptom people encounter when they have magnesium deficiency is fatigue. Of course, this is a symptom which is tied to a plethora of different conditions so it may not mean it is a sign of a magnesium deficiency unless other symptoms start to present themselves. In fact, there is a chance you may not be suffering from any condition at all. People get tired on occasion. The only time this should seriously present an issue is if you are suffering from constant fatigue.

High Blood Pressure

The jury is still out on whether this is a valid sign for magnesium deficiency, but it certainly is not a good thing to have high blood pressure. It can lead to heart disease and premature death. If you have high blood pressure, then your doctor is likely to help you out here. Do watch out for the other signs and symptoms, however.


There is some evidence that those suffering from lower magnesium levels are more prone to suffering from asthma. Again, no solid link has been established yet, but if you are seeing this sign along with some of the other symptoms on this list, then you may wish to consult a doctor and ask them to test your overall magnesium levels.

Muscle Twitches and Muscle Cramps

Another early ‘sign’ of magnesium deficiency is regular muscle twitches and cramps. It is speculated that the low magnesium levels allow more calcium to pour into your nerve endings which causes them to become ‘over-excited’ and twitch. During the early days, it is likely that this symptom will barely be noticeable. You may notice a twitch here or there and think nothing of it. As the condition continues, it is more likely that the symptoms will get far, far worse.

Mental Disorders

Lack of magnesium can lead to serious mental conditions. For example; there is evidence that low magnesium levels can lead to anxiety. It can also cause you to feel emotional ‘numbness’ and a sort-of hollow feeling inside. There is even evidence that low magnesium levels can lead to depression. Once again, it is not guaranteed that your conditions are caused by low magnesium levels, but the evidence certainly points in that direction.

If you believe you are suffering from low magnesium levels, then consult with your doctor as soon as possible. You should also consider taking steps to introduce more magnesium into your diet.

  • Ann F. Snook-Moreau

    I never knew there were so many bad effects from magnesium deficiency! This makes me want to be better about taking my vitamins.

  • Brittany

    Oh no! How do you get more magnesium!?!? Thanks for spreading awareness of Magnesium Deficiency!

  • Tara Pittman

    I have asthma from allergies. I will be increasing my magnesium to see if it helps.

  • Carrie Lewis

    I knew magnesium was important, but I didn’t know it was critical! I know someone with nearly every symptom you mentioned. I will pass this information to her. Who knows, a simple supplement could make all the difference.

  • Brittany Vantrease

    Ahhh! I suffer from three of these! I blame being tired and fatigued on my kids and my unwillingness to go to bed when I’m tired because I’m an adult and want me time. My eyes twitch sometimes for weeks. So that’s very interesting, although, my doctor told me that anxiety can cause that- which I have anxiety because I’m tired all of the time from my kids. It’s always a good idea to speak with your doctor before diagnosing yourself. 🙂

  • Sara Welch

    I have long been suspecting this of myself. I just started taking some magnesium pills.

  • Evelyn Hernandez

    I currently do not have a deficiency but do take a supplement. Magnesium is an essential mineral.