A member asked:

What could cause sudden diahrrea after dining a protein shake?

A doctor has provided 1 answer

Food intolerance: Many people have a lactose intolerance this can cause cramping and diahrrea after eating milk or milk proteins found in shake "powders". The coldness of a shake with ice may be shocking to your stomach causing a reflex of your bowels, so drink very cold things slowly.

Answered 9/28/2016

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Can protein shakes cause stomach pain?

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