A lot of the fiber in Fiber One bars comes from chicory root. Chicory is a common herb/weed, you can eat the young leaves as salad (it's related to endive and radiccio) and the root is used for traditional medicine and also is coffee flavoring used a lot in the South. Some people get that reaction from chicory root, especially in large quantities. If you really like the bars you might have to work up from a smaller amount, like half a bar at a time, until your digestion adapts.
Apparently a lot of people have the same issues. If you google "Fiber one bars fart" you will find some very funny web pages. I don't think I've ever noticed that trouble but I don't think I have them more than once a week.
Last edited by bronzeager; 09-22-2010 at 03:05 PM.
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