"[The FODMAP diet] is worth a shot. It may help patients feel better, and they don't have to take an expensive medication or get approval from insurance. I tell patients to try it for 2 to 4 weeks; they can tell pretty quickly if something is affecting them," Dr Johnson said.
"There are a number of reports where the FODMAP diet has been used successfully in patients with IBS. Most gastroenterologists would accept that it has good scientific rationale with a relatively weak base of evidence," he added, noting the difficulties of controlling for other variables in this type of study.
"It's important not to throw the concept out just because of a lack of strong evidence. In some of my patients, [the FODMAP diet] has been very beneficial," he concluded.