Normal transit time: Small intestine is about 23' long while large intestine is about 5' long. Food doesn't pass instantaneously from mouth to anus but rather takes 53hrs on average (http://www.mayoclinic.org/digestive-system/expert-answers/faq-20058340). Of course, this varies from person to person, depending greatly upon fiber, fluids & exercise (less time w/more of each).
Answered 5/18/2015
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