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[C] The following conclusions are supported by limited evidence or expert opinion:
With the exception of one RCT (randomized control trial) on caffeine intake, there are no controlled trials evaluating the effect of specific dietary restrictions on increasing or alleviating interstitial cystitis (IC) symptoms (e.g. pain, discomfort, urgency) in individuals diagnosed with IC. Individuals with IC do self-report an association of particular food items with IC symptoms. The most commonly implicated