Summer Heat Drinks Pose Dehydration Risks, Experts Advise Safer Choices

Alcoholic drinks, energy drinks, high‑sugar sodas and certain fruit juices can increase fluid loss in extreme heat, worsening dehydration and causing symptoms such as fatigue, headache, dizziness and muscle cramps. Experts note that while these beverages do not "dry you out" instantly, their diuretic ingredients and high sugar content can reduce the effectiveness of hydration.

In contrast, warm or tepid tea can promote sweating, which helps the body dissipate heat more efficiently than iced drinks. Green and white teas, herbal infusions and rooibos are highlighted as cooling options that also support digestion without the diuretic effect of ice‑cold liquids.

Very cold water may temporarily slow stomach emptying for some, especially people with sensitive digestive systems or conditions such as IBS, but it does not stop digestion altogether. Moderately cool water is generally safe for most healthy adults.

People with cardiovascular disease are urged to limit alcohol, stay in shade, hydrate with electrolyte‑rich fluids and avoid rapid temperature shifts that can stress the heart. Light physical activity during cooler morning or evening hours is recommended.

For rapid cooling of beverages in outdoor settings, a mixture of ice, water and kitchen salt can lower the temperature faster than ice alone, a technique useful at barbecues or picnics.