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Former_Maybe_8437 t1_jdexkv4 wrote

>there really aren’t any major competing theories any more.

This is false. Food intolerances, medication side effects, SIBO and motility issues are all potential underlying causes of IBS other that neurochemical imbalances.

Where is your source of a major medical body declaring that DGBI is the sole cause of IBS to the exclusion of all others?