Magnesium is a mineral essential to human health. It is involved in many functions, including done development, nerve impulse conduction, maintenance of a normal heart rhythm, muscle contraction, and blood glucose control. It is present in many foods and available as a supplement or in certain medicines.

Health considerations

Magnesium deficiency is typically prevented through controlled excretion by the kidneys. Type 2 diabetics, alcoholics, persons with malabsorption disorders, and older adults are at a greater risk. Symptoms include nausea, vomiting, fatigue, weakness, muscle spasms, and abnormal heart rhythm. Chronically low intake is associated with hypertension, cardiovascular disease, type 2 diabetes, osteoporosis, and migraines.

Keep in mind

Some medications interfere with magnesium absorption. Magnesium supplements can have gastrointestinal effects.

May be found in

Almonds, spinach, cashews, peanuts, enriched cereals and non-dairy milks, soymilk, edamame, shredded wheat, black beans, baked potato including skin, brown rice, Rolaids


National Institutes of Health

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