Obesity and the Overactive Bladder
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Obesity (BMI greater than 30 kg.m-2) and overweight (BMI greater 25-30 kg.m-2) are associated with an increased prevalence of pelvic floor disorders, including urinary incontinence and overactive bladder (OAB) syndrome. A positive association between obesity and OAB is present in women, although it is more difficult to demonstrate in men. OAB may result from several obesity-related conditions including the mechanical effect of increased body mass on the bladder, a result of type-II diabetes or the presence of metabolic syndrome. The underlying metabolic defects of the latter two conditions in generating OAB are discussed. Finally the involvement of endothelial dysfunction as a cause of OAB is considered, as this pathology is a result of several obesity-related conditions.