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Potassium and sodium regulate the body's water resources, ensuring normal heart rhythm. Maintaining the proper level of potassium provides the proper oxidation of the brain, lowers blood pressure, increases the permeability of cell membranes (as an antagonist of calcium). It is a base-forming element. It is widely used in sports diet before and after training in the form of supplements, nutrients, vitamin-mineral preparations and minerals, concentrates and ready, isotonic and hypertonic beverages. Natural sources of acquisition of potassium are: vegetable products (bananas, citrus fruits, melons, mint leaves, green vegetables, potatoes) and animal products (sea fish, meat). Potassium is present in the form of organic compounds: citric acids, and fumarates gluconates and inorganic (chlorides, sulfates, oxides and carbonates).
Potassium deficiency (hypokalemia): excessive tiredness, headaches and irritability, problems with sleeping, muscle cramps, constipation. Potassium levels may drop sharply in the event of a reduction in blood sugar levels, prolonged starvation, severe diarrhea. They can occur when too much of strong coffee is consumed, with alcohol abuse and when eating too much sweets.
The excess of potassium (hyperkalemia) is often the cause of depression, hypotension, tingling in the extremities.
