Caffeine does have a diuretic effect, meaning it increases urine production, which can cause

dehydration if fluids aren't replaced. However, coffee is mostly made of water, which actually

balances out the diuretic effect when consumed in typical amounts.

The risk of dehydration comes with the use of caffeine supplements or drinking too much coffee throughout the day. The bottom line: there is no need to get rid of your morning cup of coffee if hydration is a concern. Instead, focus on where to add more caffeine-free fluids throughout the day.