Potassium

Description

Potassium homeostasis, which is mainly intracellular cation, such as sodium is closely controlled by different systems of the body. Intracelluliares high concentrations are needed for the proper functioning of many enzymes. Potassium makes the acid secretion of the stomach and helps to ecréssion of protons by the kidney. Finally, potassium participates in the regulation of the secretion of aldosterone in the zona glomerulosa of the adrenal glands.

Potassium is naturally present in foods at levels more or less important. Food sources are virtually unlimited, since it is a major component of plant and animal cells. Fruits and vegetables, meat, milk and cocoa are rich in potassium.

Dietary potassium exerts an effect on blood pressure. This is an effect opposite to that of sodium and more marked as the blood pressure falls in most hypertensive subjects with increased potassium intake, whereas potassium depletion is accompanied by an increase in blood pressure.

Sources of Potassium

See the list of foods that provide the most potassium

Needs

Mimima needs are estimated at 390-585 mg per day. The 100% value on the ANC Nutritiomètre is 600 mg.

The healthy person can deal with very large input changes without resulting in an overload condition or deficiency. In contrast, aged about needs regular and sufficient intake to avoid imbalance.

(Source: "Recommended dietary allowances for the French population," the CNERNA-CNRS. Edition coordinated by Ambroise Martin.)

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