Nutrition expert clarifies need for electrolyte drinks during heat

Nutrition expert Laura Müller from the Verbraucherzentrale Thüringen advises that extra electrolyte drinks are generally unnecessary during hot summer days for most people. Since sweat is approximately 99 percent water and contains electrolytes like sodium and chloride, a balanced diet and regular water intake are typically sufficient to compensate for losses.

For those engaging in intense physical activity or manual labor in the heat, additional sodium may be beneficial. However, expensive electrolyte supplements are not required; mineral water with high sodium content, fruit juice spritzers with salty snacks, or a pinch of salt in water are effective alternatives.

Experts warn against consuming excessive amounts of mineral-poor water, such as soft tap water, over long periods, as this can dangerously dilute sodium levels in the blood. To maintain hydration, it is recommended to drink a glass of water every one to two hours, even when not feeling thirsty.