Why does running water make us want to use the toilet? artwork

Science & Medicine

Why does running water make us want to use the toilet?

Ask the Naked Scientists by Dr Chris Smith

May 22, 202600:22:56Science & Medicine

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Why does running water make us want to use the toilet? is an episode from Ask the Naked Scientists by Dr Chris Smith. Why does running water make us want to go to the bathroom? What is IQ, and can you improve it? What is a Pica craving? Why...

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Published May 22, 2026, 00:22:56 long, audio available.