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Dr. David
Dr. David, Board Certified MD
Category: Medical
Satisfied Customers: 48711
Experience:  Board Certified Physician
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My son is concerned as his poop appears to be very thin and

Customer Question

My son is concerned as his poop appears to be very thin and almost pencil shaped. Should I worry?
Submitted: 2 years ago.
Category: Medical
Expert:  Dr. David replied 2 years ago.
This is Dr. David

I am a cancer doctor

colon cancer would be very very very unlikely at his age

pencil shaped stools as a symptom by itself without other symptoms doesn't point to colon cancer reliably.

here is a medical article on it

excessive fiber in the diet, bowel irritaiton from bacteria or virus, fast stool transit times can all cause thin stool or soft stools.

how long has his symptoms of thin stools been going on?