Did this cool facts app cite its source? From my studies and advanced work, I have always read that normal intestinal transit times are from 36 to 48 hours - that's mouth to anus. The type of diet also influences the transit speed. Diets high in fruits, vegetables and multigrains are processed faster tahn those high in sugar and carbohydrates.
And then there is "everyone is different." Genetics, medications, hydration and stress also affect the transit time.
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