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Photo Credit shih-wei/iStock/Getty Images. Magnesium is a naturally occurring element that people need as a key nutrient. The human body relies on magnesium for various purposes, and people who don't have enough can suffer various symptoms, through dry, itchy skin is not considered one of them.
Seriously, itâs that important. Magnesium deficiency can cause muscle weakness, tremor, and spasm. Your heart is a muscle. If you get a spasm or tremor in your heart, youâre in trouble. In fact, magnesium deficiency can cause arrhythmias such as atrial fibrillation, irregular contraction, and rapid heart rate.