Dietary Influence on Bladder Pain Syndrome: A Systematic Review.

Bladder Pain Syndrome (BPS) is a chronic condition characterized by discomfort or pain in the bladder region, often exacerbated by bladder filling and alleviated by voiding. Despite numerous theories regarding its etiology, the potential dietary influence on BPS symptoms has not been thoroughly elucidated. This systematic review aimed to synthesize evidence on the relationship between nutritional factors and the exacerbation or amelioration of BPS symptoms. An extensive search was conducted across multiple electronic databases, including PubMed/MEDLINE, EMBASE, Cochrane Library, Web of Science, Scopus, CINAHL, and Google Scholar, to identify studies exploring the impact of diet on interstitial cystitis/bladder pain syndrome(IC/BPS). Comparative analysis was employed to synthesize data from the selected studies, focusing on identifying corroborative and conflicting evidence regarding diet and IC/BPS. The analysis revealed recurring themes across the eight selected studies, including the association of certain foods and beverages with the worsening of IC/BPS symptoms. Patients frequently reported dietary sensitivities, particularly to acidic and spicy foods, caffeine, and alcohol. Evidence from the studies suggests that dietary modifications, both self-directed and structured interventions, may improve symptom severity and overall patient quality of life. Additionally, tools developed and validated for assessing dietary sensitivities could facilitate better management of IC/BPS through personalized diet plans. The impact of individual substances such as caffeine and tea was underscored, indicating their potential as modifiable risk factors in IC/BPS symptomatology. The collective evidence from the reviewed studies confirms the importance of dietary influence on IC/BPS symptom management. An individualized approach to dietary counseling based on patient sensitivities could be beneficial. However, the diversity in study methodologies and outcomes indicates a need for more uniform research to establish standardized dietary guidelines for IC/BPS patients.