Normally, we take in enough potassium with a healthy diet which includes plenty of vegetables and fruit. Bananas, potatoes, oranges, avocados, dried apricots, raisins, dates, vegetable juice, soya beans, spinach and mushrooms are particularly rich in potassium.
Potassium is a natural opponent of sodium. A balance between sodium and potassium is essential to maintain the correct water content of the cells and to regulate many processes in our metabolism.
The functions of potassium in the human body have been scientifically investigated and confirmed by the European Food Safety Authority (EFSA). [1]
- it is critical to normal blood pressure
- responsible for the creation and transmission of normal heart stimuli
- ensures correct transmission of nerve impulses to the muscles
- contributes to the normal function of the nervous system
- important for a healthy acid-alkaline-balance
- important for the protein and carbohydrate metabolism
- prevents excess calcium excretion through the kidneys
Today's diet often contains too much salt (sodium) and too little potassium, which may lead to high blood pressure. A diet that is rich in fruit and vegetables and contains plenty of potassium but little salt is essential for healthy blood pressure. Too little potassium in the blood can also cause heart palpitations.
Excessive salt intake from food results in increased calcium excretion. Potassium counteracts sodium and reduces the loss of calcium through the kidneys, thus helping to reduce the depletion of calcium from bones.
Potassium is essential for the transmission of impulses between nerves and also from nerves to muscles. Potassium deficiency can lead to disruption of these transmissions, which may result in a decrease in the muscle's ability to contract, resulting in disturbances of muscle function.