Potassium

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diagram of chemical structure
Chemical structure of potassium gluconate.

Potassium is both a chemical element and a mineral essential to the human body. Potassium is important for nerve and muscle function, and especially important for the heart.[1][2]

Potassium ion

Potassium ions, K+
, are important in conducting signals between cells. Potassium is an electrolyte.

Deficiency

Bananas are well known as a good source of potassium. Image: Pixabay. License: Pixabay open license.

The average person needs about 4,700mg of potassium per day.[1]

Low levels of potassium have been linked to a number of health problems including high blood pressure, heart disease, stroke, arthritis, cancer, digestive disorders, and others.[3]

A condition called hypokalemic periodic paralysis causes levels of potassium to drop too low, causing a temporary full or partial paralysis.

Theory

Evidence

Risks and safety

Excessive amounts of potassium on the blood can cause hyperkalemia, and even death.[2]

Potassium can also interact with many other drugs.[2]

Costs and availability

Potassium is available over the counter in the form of tablets or capsules, liquid, or soluble powder. It is a main ingredient in oral rehydration solutions, which was commonly used to treat dehydration. Potassium is also available for IV administration.

Foods

Potassium is also found in many foods, including bananas, avocados, almonds, peanuts, citrus fruits and, green leafy vegetables.[3]

Learn more

See also

References

  1. 1.0 1.1 "Potassium Supplements: Benefits, Potassium Deficiency, Dosage and More". WebMD. Retrieved February 27, 2021.
  2. 2.0 2.1 2.2 "Hyperkalemia - What You Need to Know". Drugs.com. Retrieved February 27, 2021.
  3. 3.0 3.1 "Potassium Supplements: Benefits, Potassium Deficiency, Dosage and More". WebMD. Retrieved February 27, 2021.