Magnesium

Nutrients connected to Magnesium

A link means the body needs the nutrient for this, or that low intake is linked to it. It does not mean extra supplements help if your intake is already adequate; each link shows how strong the evidence is.

• MagnesiumEstablished role

  A blood test measures magnesium (normal range about 1.6 to 2.6 mg/dL, varies by lab). A urine test may also be used.

• Epsom Salt (Magnesium Sulfate)Documented risk

  Blood magnesium rose to dangerous levels in swallowing case reports; whether baths raise it is unproven.

• Magnesium Chloride Bath FlakesPreliminary or mixed

  Serum magnesium rose slightly with a cream in a 25-person pilot (significant only in a subgroup) and did not change significantly with a spray in a 20-person kidney pilot; a 2017 review calls transdermal claims unsupported.

• ZincDocumented risk

  Long-term excess zinc can lead to magnesium deficiency.

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