Iced coffee in summer can dehydrate seniors — when it becomes a health risk
Iced coffee in moderate quantities does not dehydrate on its own, but for seniors the risk rises sharply when it replaces water, is high in caffeine and sugar, or is consumed during peak afternoon heat. Caffeine has a mild diuretic effect, and older adults have a reduced sense of thirst, making it harder to recognise dehydration. Experts recommend seniors limit coffee to morning hours and ensure regular water intake throughout the day.
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