Does Coffee Dehydrate You?

No, moderate coffee consumption does not cause dehydration. While caffeine acts as a mild diuretic by increasing urine output, the water in a cup of coffee contributes to your overall daily fluid intake. Singapore HealthHub indicates that regular caffeinated drink consumers develop a tolerance, minimizing any diuretic effect. Drinking up to three to four cups of local kopi daily is generally safe and will not deplete your body of essential fluids. Source: HealthHub Singapore