An honest review here, which shows that, while osteopathy may be able to make a difference to IBS, it may require further study to prove this.
This particular study shows that with 2 osteopathic treatments, thsoe were treated with osteopathy had a statistically significant reduction in the IBS severity score after 2 treatments and 7 days. However at 28 days, there was little difference between the group that was treated with osteopathy and the group that received a sham treatment.
As with most patients who have suffered pain or discomfort for a lengthy period, those who suffer from IBS will probably require more than two treatments to thelp to ease symptoms that have been a part of their nature for a long time.
However, if you suffer from IBS it is very clear that your body is protesting. Osteopathy can help bring your body back to a place where it can settle and recover. The advice of a professional, qualified nutritionist can also, of course, be invaluable.