What could be causing frequent bowel movements?

Need more info. There are so many possible causes that i can't list them all here; without more information on other symptoms, i can't narrow it down for you. I'd suggest seeing the doctor for diagnosis and any needed treatment.

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What could be causing me to have frequent bowel movements? Too much roughage?

Too much roughage. Yes if there is more bulk in the diet due to more roughage than you will have bulky and more frequent bowel movements. Read more...