What is the most common risk factor for urinary incontinence in older women?

The most common risk factor for urinary incontinence in older women is childbirth. This condition is often linked to changes in the pelvic floor that occur as a result of pregnancy and vaginal delivery. The process of childbirth can lead to muscle and nerve damage, decreased pelvic support, and changes to the urethra, all of which can contribute to the development of urinary incontinence later in life.

While other factors such as obesity, diabetes, and smoking are indeed associated with urinary incontinence, they do not specifically pertain to the individual physical changes that occur due to childbearing. Obesity can exacerbate urinary incontinence by increasing pressure on the bladder, while diabetes may affect nerve function and bladder control. Smoking is also known to be a risk factor due to its potential to cause chronic cough, which places additional pressure on the pelvic floor. However, childbirth remains the primary risk factor as it directly influences the structural integrity of the pelvic support system.