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It’s a widely held belief that coffee has dehydrating effects.

Studies show that it’s unlikely for moderate coffee consumption to lead to dehydration.

That doesn’t necessarily mean you should reach for a caffeinated beverage whenever you feel thirsty.

Close up shot of a person sitting at a cafe table, holding a coffee beverage with latte art.

Oleg Breslavtsev / Getty Images

When it comes tocaffeine consumption, moderation is key.

How Much Water Is in Coffee?

Coffee is mostly water.

Why Does Coffee Cause Dry Mouth?

Contrary to popular belief, dry mouth after drinking coffee isn’t due to dehydration.

Coffee contains tanninscompounds responsible for coffee’s bitter flavor and dry mouth effects.

Can You Stop Coffee’s Diuretic Effects?

Here’s how:

Compared to Coffee, Is Tea More Hydrating?

Compared to coffee, tea is generally considered to be more hydrating because it contains less caffeine.

you’re free to also reduce tea’s caffeine content by steeping it for a shorter time.

However, factors that cause the body to lose fluids more quickly than you could replace them might.

Commoncauses of dehydrationinclude:

Summary

Coffee contains caffeine, a stimulant with mild diuretic effects.

Most people can safely enjoy coffee without having to worry about dehydration.

Drinking more than four cups daily may increase the risk of mild dehydration.

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