Is decaf coffee less of a diuretic than caffinated coffee?

That's a great question, and the answer isn't quite as simple as you might think!

Here's the breakdown:

* Caffeine is a diuretic: Caffeine does stimulate your kidneys to produce more urine, which is why you might feel the need to use the bathroom more often after a cup of coffee.

* Decaf coffee still contains small amounts of caffeine: While decaf coffee has most of the caffeine removed, it typically still contains about 2-5mg of caffeine per cup. That's significantly less than regular coffee (which can have 80-100mg per cup), but it can still have a slight diuretic effect.

* Other factors contribute to diuretic effect: The diuretic effect of coffee isn't entirely about caffeine. Other compounds in coffee, like chlorogenic acid, can also have a diuretic effect. So even decaf coffee might still have a bit of this effect.

In conclusion:

Decaf coffee is less of a diuretic than caffeinated coffee because it contains less caffeine. However, it's not entirely free of diuretic effects. If you're sensitive to diuretics, you might still notice a slight effect from decaf coffee.