I had stomach problam that could have been IBS.
It felt as if i had dead bowels / colon' with no food passing to excretion - no movement in colon.
Even if it is not IBS my success may help.
1) NO spices in diet eg curry
2) NO fatty or greesy foods like fries
3) 5 TBL Aloevera conc 3 times a day
4) Multivitimin supplement + minerals daily
5) stress related issues effect colon so I took a smoke of 3 spliffs a day for just over a week. yes i mean cannabis.
6) alternative to spliff is chinese herbs for headaches - they work by removing stress (Zheng Tian Wan) - 2 weeks supply.
7) eat greens, lentils, fruit especially apples and eggs.
hope this will help someone as it helped me, no matter how drastic the solution.