The second utilizes a highly selective media to capture more radioactive elements in the presence of ions other than sodium, such as potassium, magnesium, and calcium, also through ion exchange process.

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Other times, problems such as an electrolyte imbalance (for example, not having enough potassium, magnesium or calcium in your body), flat feet, diabetes, thyroid abnormalities, certain medications, alcohol or Parkinson's disease may be the cause.

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To come up with his index, Drewnowski ranked foods based on their concentrations of nine essential nutrients (protein, fiber, calcium, iron, magnesium, potassium, vitamins A, C, E).

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Jake Matijevic was found to be high in elements consistent with the mineral feldspar, such as sodium and potassium, and low in elements such as magnesium and iron.

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