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Can IBS Be Passed Down Within Families?
Some research has examined how much genes and environment play a role in developing IBS.
A nationwide study in Sweden showed that some cases of IBS are closely related to genetics.

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Its now thought that at least 60 genes increase the risk of developing IBS.
However, the studies so far havent been strong enough to narrow down how the genes interact.
Its also not known yet which of these genes may put someone at a higher risk than others.
IBS can also be diagnosed in children.
One study found that about 5% of kids over age 4 meet the criteria for IBS.
What Age Does IBS Typically Appear?
IBS could be diagnosedin anyoneof any age and in any part of the world.
However, some groups may be more likely to develop the signs and symptoms of IBS.
IBS tends to bemore common in womenthan it is in men in most parts of the world.
The studies from Taiwan showed that older age was another risk factor.
What Causes IBS?
There may be manypotential causesof IBS.
More than one factor is likely at work in any person with the signs and symptoms.
There could also be a genetic component.
The genes may be expressed when another factor comes into play.
IBS is increasingly being understood to be a complex condition with many potential causes.
Over time, it may become clear what triggers bring onsymptomsof the condition.
They tend to be different for each person.
Work with a healthcare provider to identify triggers and learn ways to reduce your exposure to them.
Can Genetic Testing Help Diagnose IBS?
The genetics of IBS, and indeed for many conditions, is still being uncovered.
Studies on the genetics of IBS have provided information, but they have been small.
Not enough is known yet about which genes might be most important.
No genetic tests are available at this time that can detect a higher risk of developing IBS.
Genetic testing is done only in the setting of a clinical trial.
Keeping a food and symptom diary can help detect patterns.
Some of the symptoms of IBS can include:
Some symptoms arenot considered part of IBS.
Gene testing is not currently available for the genes possibly connected to IBS.
People experiencing digestion problems should seek care from their healthcare provider to get a diagnosis and recommendations on treatment.
2016;2(1):16014. doi:10.1038/nrdp.2016.14
Henstrom M, D’Amato M.Genetics of irritable bowel syndrome.Mol Cell Pediatr.
2018;195:134-139. doi:10.1016/j.jpeds.2017.12.012
Kim YS, Kim N.Sex-gender differences in irritable bowel syndrome.J Neurogastroenterol Motil.
2022;19:689-702. doi:10.1038/s41575-022-00662-2.
Chey WD, Eswaran S, Kurlander J.JAMA patient page: irritable bowel syndrome.JAMA.
2015;313(9):982. doi:10.1001/jama.2015.0958