12.3: Part C - Corn Test
- Page ID
- 100766
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Finding Out the Scoop on your Poop
So this is an interesting lab and won't call it "hands on" because it involves other body parts besides your hands- LOL. The ability to determine your "transit time" in your gut is not easy. One of the simple ways is t eat something that does not digest and you can see. This is where corn comes into play. While the inner portion of the corn kernel can be digested the out portion is cellulose and this can’t be digested.
In general, the transit time from ingesting corn to the small intestine is quite short. The majority of the time for the transit time is spent in the large intestine. While there is a lot of variability between individuals, it would normally be about 24 hrs. with about 12 hrs. of variability. Thus, if someone’s transit time is less than 12 hours, it is usually diarrhea, and if it is more than 36 hrs, it is commonly constipation.
Part 1
Part 2
These articles goes into it in a lot of detail. I just want the following things:
1. Time you ate the corn and approximately the amount (weight or servings- wt better)
2. Time it took to leave your system- beginning and end (not usually all gone in one movement)
3. Classify the movement according to the system mentioned- #s assigned to textures (See part 2).
4. Compare your time to the recommendations or suggestions in the article. Do you agree with it? Are you slow/fast/normal usually.
5. Corn can change the transit time in some. Did it for you?
6. Did you find “getting the scoop on your poop” interesting? Have you ever thought about your digestive health before?
After you look at the website- Please mention the Type of feces you had (closest guess).


