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You are here : 3-RX.com > Medical Encyclopedia > Diet and Nutrition > Potassium: Functions and Sources
      Category : Health Centers > Food, Nutrition, and Metabolism


Potassium | Functions and Sources

What food source is the nutrient found in?

Potassium is abundant in the diet. It is found in most

  • fruits
  • vegetables
  • dairy products
  • fish
  • lean meats
  • grains
  • poultry
  • Bananas, potatoes, avocados, cantaloupe and orange juice are especially good sources of potassium. Other good sources include apricots, orange juice, and cooked or dried beans and peas.

    How does the nutrient affect the body?

    Potassium is found inside the cells, where it works with sodium, on the outside of the cells, to keep fluids balanced correctly. Working with sodium, potassium assists in the smooth working of muscles, such as the heart. This role is critical to basic heart function and blood pressure. It also helps transmit nerve impulses or signals.

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    Potassium: Overview & Description


    Author: Clare Armstrong, MS, RD
    Reviewer: Kimberly A. Tessmer, RD, LD
    Date Reviewed: 04/05/01

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