Electrolytes such as sodium, potassium, and magnesium are essential for fluid balance, nerve function, and muscles. However, marketing often exploits these essential functions to promote supplements, Andersson told TV4 Nyheterna.
For ordinary exercisers and people in daily life, there is no evidence that expensive electrolyte drinks or powders provide better effect than regular food and water, Andersson said. Electrolyte replacement is only needed in cases of hard physical activity with heavy sweating, often in heat, where salt (sodium chloride) is primarily lost.
Taking electrolyte supplements daily without need can pose risks, such as disturbing the body's balance and damaging the kidneys. Excessive sodium intake can contribute to high blood pressure. Andersson noted that more of a nutrient does not improve function if there is no deficiency. The electrolyte trend is largely driven by marketing and profit, and there is a broader supplement trend, especially among young people, who find supplements more exciting than a balanced diet.