Friedlander, Justin I, Shorter, Barbara, Moldwin, Robert M · BJU international · 2012 · DOI
This review examined how food and beverages affect bladder pain syndrome (IC/BPS) and related conditions like fibromyalgia and chronic fatigue. Nearly 90% of patients report that certain foods make their symptoms worse—especially acidic foods like citrus and tomatoes, caffeine, alcohol, and spicy foods—while some substances like calcium and baking soda may help. The researchers recommend that patients work with their doctors to identify their personal food triggers through careful elimination diets rather than avoiding foods unnecessarily.
For ME/CFS patients, this review is relevant because chronic fatigue syndrome is identified as a common comorbidity with IC/BPS, and the shared dietary sensitivities and proposed mechanisms (neural upregulation, central sensitization) may help explain overlapping symptom triggers across these conditions. Understanding food-symptom relationships could help ME/CFS patients develop personalized dietary strategies to reduce symptom burden, particularly for those with concurrent bladder or pain symptoms.
This review does not prove that specific foods cause IC/BPS or ME/CFS, only that patients report symptom associations with dietary intake. The evidence is based on self-report questionnaires rather than controlled dietary intervention trials, so causation versus coincidental correlation cannot be established. Individual sensitivities vary widely, so findings do not apply uniformly across all patients.
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
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