Obesity is defined as a BMI (Body Mass Index) of 30 or more. 

BMI is calculated by dividing weight in kilograms by height in meters squared. BMI calculators can be easily found online. 

Fat deposits around the abdomen are thought to be the main cause, putting a chronic strain on the bladder and urethra, as well as stretching and weakening the nerves and muscles of the pelvic region.

There is a strong correlation between the risk of urinary incontinence and each additional BMI unit for people with obesity. Encouragingly, there is also a proven reduction in the incidence of urinary incontinence as the BMI reduces. So weight management should improve the issue and in some cases resolve incontinence. 

obesity and incontinence