
Introduction
Potassium is an essential nutrient present in all body tissues. It is sometimes referred to as an electrolyte because it carries a small electrical charge that activates various cell and nerve functions.
Potassium has a strong relationship with sodium but has opposite effects on the body as high potassium intake may offset some of the sodium in the diet. [1,3,4]

- Potassium is absorbed in the small intestine via passive diffusion. [1]
- About 85-90% of potassium consumed is absorbed. [1,2]
- After a meal, potassium is absorbed and rapidly enters the extracellular fluid. [5]

- The total amount of potassium in the human body is approximately 140g (for a 175-pound adult). [1,5]
- Also, almost 98 per cent of total body potassium is found within cells. [3,5]
- Most of the body potassium is located in the muscle (70%), with lower amounts present in the bone, liver, skin and red blood cells. [5]

- Potassium is usually excreted in the urine, some excreted through stool and a very small amount through sweat. [1,5]
- The total potassium excreted through urine is estimated to be around 77% and 92% of total dietary intake. [5]
Body Functions

Adequate Daily Intake

Deficiency Symptoms

Potassium Food Sources

Excessive Intake/ Toxicity Side Effects

Groups At Risk of Potassium Deficiency
Potassium Interaction With Other Nutrients
- Sodium chloride – Dietary potassium intake can increase urinary excretion of sodium chloride. [2]
- Magnesium – Inadequate magnesium intake can lead to potassium deficiency. [1]
- Calcium – Potassium depletion enhances the urinary loss of calcium. However, potassium supplementation can potentially decrease urinary calcium excretion. [5]
Nutrient Profiles For Food Groups
About Veganism
Learn more about the origins , different types and potential nutritional deficienciesOur Mission
Learn more about our mission, our approach and the story behind the project2050 Challenges
Learn more about the Environmental, Health and Societal challenges of the futureSubscribe to Newsletter