"Excessive heat causes water and electrolyte loss through sweat, and coffee can cause even more fluid loss, catalyzing dehydration and hastening its related issues."
"While we usually welcome coffee's ability to make us poop, losing more fluid on top of increased sweat output during a heat wave puts you in danger of dehydration."
"Supplementing coffee with water and electrolyte drinks during a heat wave is important, whether you're a seasoned coffee drinker or not."
"If you're new to coffee, you should abstain during a heatwave or accompany coffee with a large glass of water."
During heatwaves, coffee can exacerbate dehydration due to its caffeine content, which acts as a diuretic. This leads to increased fluid loss through urination and sweating. While regular coffee drinkers may not experience significant diuretic effects, new or heavy drinkers should be cautious. It is advisable to accompany coffee with water and to consume hydrating foods like fruits and vegetables. Keeping caffeine intake under 400 milligrams daily can help mitigate dehydration risks during extreme heat.
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