7 Signs and Symptoms of Magnesium Deficiency 

Muscle twitches and cramps 

Twitches, tremors, and muscle cramps are signsTrusted Source of magnesium deficiency. In worst-case scenarios, deficiency may even cause seizures or convulsions. 

Mental health conditions 

Mental health conditions are another possible effect of magnesium deficiency. 


Osteoporosis is a disorder characterized by weak bones and an increased risk of bone fractures. 

Fatigue and muscle weakness 

Fatigue encompasses physical and mental weakness. This usually signifies you need to rest. However, chronic exhaustion may suggest a health issue.  


Severe asthmatics often need magnesium. Individuals with asthma have lower magnesium levels than those without asthma.  

Irregular heartbeat 

Heart arrhythmia, or irregular heartbeat, is a potentially severe effectTrusted Source of magnesium deficiency. 

How to get enough magnesium 

The table below shows the Recommended Dietary Allowance (RDA)Trusted Source or adequate intake (AI) of magnesium for people in the United States. 

The bottom line 

The symptoms of magnesium deficiency are usually subtle unless your levels become severely low. 

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