Impact of Short Duration FODMAP Restriction on Breath Gases and Gastrointestinal Symptoms

This study suggests that breath H 2 and CH 4 may be influenced by short-term dietary changes and could be a useful biomarker of response to FODMAP restriction. Future studies should investigate whether nonfasting breath H 2 and CH 4 levels, in response to habitual dietary intake, is predictive of response to the low-FODMAP diet.