Turnips aren't always well-liked by everyone. **Irritable bowel syndrome (IBS) Certain foods may cause varied degrees of intolerance in patients with irritable bowel syndrome. In other cases, the sensitivity is limited to cruciferous vegetables such as turnip or rutabaga. People with this condition can lessen their symptoms by restricting or avoiding fermentable foods like those from the cruciferous family (abdominal pain, bloating, diarrhea). It is occasionally feasible to gradually reintroduce certain foods when the symptoms are minor, or during so-called "remission" periods, but always respecting individual tolerance (see our Irritable Bowel Syndrome sheet). **Cruciferous vegetables and some medications Indoles, which are found naturally in crucifers, can reduce the effectiveness of analgesics such acetaminophen (Tylenol, Atasol, Tempra) and other medications that include a combination of active chemicals (Benylin , Contac, Robaxacet). This is something to think about for people who eat a lot of cruciferous veggies.