Guide: Magnesium and Potassium in the Context of Muscle Function

Background and Context

The European Food Safety Authority (EFSA) has assessed and authorized certain health claims for minerals. These claims are set out in Regulation (EU) No 432/2012 and may be used under the conditions specified there.

This guide brings together the authorized claims for magnesium and potassium in the context of muscle function and explains the scientific background in general terms.

Magnesium – Properties and Sources

Magnesium is a mineral present in various tissues of the human body. It is found in many foods, including:

• Leafy green vegetables (e.g., spinach, Swiss chard)
• Nuts and seeds (e.g., pumpkin seeds, almonds)
• Whole grain products
• Legumes

Authorized Health Claim

This claim is based on the body of evidence assessed by EFSA. The recommended daily intake may vary depending on age and sex. Further information is available from the relevant national authorities.

Potassium – Properties and Sources

Potassium is a mineral found in many foods. Common sources include:

• Bananas and dried apricots
• Potatoes and sweet potatoes
• Legumes (e.g., white beans, lentils)
• Avocados

Authorized Health Claim

This claim is also based on EFSA’s assessment. The recommended daily intake of potassium is published by national nutrition societies and can serve as a guideline.

Summary of the Authorized Claims

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