IBS & hEDS/HSD
Irritable Bowel Syndrome (IBS) and Hypermobility
None of us writing this are doctors. This page collects what the published research actually says about IBS in hEDS/HSD, so you have something concrete to bring to a doctor.
IBS and hypermobility are both common conditions on their own, which makes their overlap easy to miss. One of the largest studies ever done on this question - covering over 1.6 million people - found a real, significant link.
How Much More Common Is IBS in Hypermobile People?
A 2023 population-based study screened 1,627,345 Israeli adolescents assessed before compulsory military service, with diagnoses of both HSD/hEDS and IBS confirmed by board-certified specialists. Of 4,686 adolescents identified with HSD/hEDS, 71 (1.5%) had a diagnosis of IBS. Of the 1,621,721 adolescents without HSD/hEDS, 8,751 (0.5%) had IBS. That works out to an odds ratio of 2.16 - people with HSD/hEDS were more than twice as likely to have IBS.
The scale of this study is worth noting: this is not a small clinic sample, but a near-complete national cohort of an age group, which makes the finding considerably more reliable than smaller studies on the same question. Other, smaller clinic-based studies have found even higher overlap rates - up to 30-40% of hEDS patients meeting IBS criteria - but those studies draw from people already seeking care for symptoms, which tends to inflate the apparent overlap compared to a whole-population sample like this one.
What to do with this
If you have hEDS/HSD and also deal with recurring abdominal pain, bloating, or altered bowel habits, this research supports raising IBS specifically with a doctor rather than assuming it is unrelated. This connects to the broader digestive dysmotility research covered elsewhere on this site - IBS and generalized GI dysmotility are related but distinct diagnoses, and getting the right one matters for what treatment approach actually applies.