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What causes stress urinary incontinence (SUI)?

More than 60% of adult women in the US experience urinary incontinence and over 37% of them suffer from stress urinary incontinence (SUI).1

Causes of stress urinary incontinence

Incontinence, also known as urine leakage or bladder leakage, can be caused by any number of factors. It can develop slowly or occur as the result of a specific life event.

Stress urinary incontinence (SUI) occurs when there is weakening of the muscles that support the urethra or control the release of urine. SUI does not have a connection to emotional stress.2

Causes of stress urinary incontinence

Genetics3

According to some studies, there is increasing evidence that urinary incontinence is related to a person’s genetics. If someone in your family has urine leakage issues, you are more likely to experience it in your lifetime as well.

Pregnancy and childbirth

During pregnancy, carrying a baby can put extra pressure on the bladder. During labor and delivery, the nerves and muscles that control urinary function can also become damaged. Stress urinary incontinence (SUI) after childbirth is common.

Menopause

Menopause is one of the causes SUI. Estrogen levels decrease during menopause, leading to the thinning of the pelvic floor muscles, causing lower support to the pelvic floor, which can lead to SUI.

Pelvic floor disorders4

Women’s pelvic floor muscles hold up the pelvic organs, including the vagina, cervix, uterus, bladder, urethra, intestines and rectum. If these muscles and tissue weaken, it can lead to urine leakage, accidental bowel leakage and pelvic organ prolapse (POP).

Previous pelvic surgeries5

Any surgery involving a woman’s reproductive organs has a potential for damaging the pelvic floor muscles surrounding the surgical site. This is especially true if part of the pelvic floor is removed, such as during a hysterectomy.

Lifestyle5,6

  • Disease overview: Causes of stress urinary incontinence include pregnancy or childbirth, chronic coughing, constipation, obesity, aging, smoking, extreme weight lifting and genetics, menopause, previous pelvic surgeries, and pelvic floor disorders.
  • Treatment options: There are lifestyle changes that can be made to attempt to reduce symptoms of SUI including keeping an empty bladder, drinking less fluids, losing weight, quitting smoking, limiting physical activities, and stopping extreme weight lifting activities.

Not sure if you have SUI?

To help you better understand your symptoms and take the first step toward relief, we invite you to fill out this quick, free, and confidential self-assessment.

Help is on the way.

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Where to look next

Symptoms of incontinence

Finding the right doctor

PM-25685


References:

  1. Patel UJ, Godecker AL, Giles DL, Brown HW. Updated Prevalence of Urinary Incontinence in Women: 2015-2018 National Population-Based Survey Data. Female Pelvic Med Reconstr Surg. 2022 Jan 12
  2. Trowbridge ER, Hoover EF. Evaluation and treatment of urinary incontinence in women. Gastroenterol Clin North Am. 2022;51(1):157-175.
  3. McKenzie P, Rohozinski J, Badlani G. Genetic influences on stress urinary incontinence. Curr Opin Urol. 2010;20(4):291-295. doi:10.1097/MOU.0b013e32833a4436.
  4. American Urogynecologic Society. Bladder control: symptoms & types. Voices for PFD. Published 2017. Accessed April 14, 2026. https://www.voicesforpfd.org/bladder-control/symptoms-types/.
  5. Office on Women’s Health. For more information about urinary incontinence [Internet]. U.S. Department of Health and Human Services; updated April 26, 2018. Accessed April 14, 2026. https://www.womenshealth.gov.
  6. American Urogynecologic Society. Voices for PFD. https://www.voicesforpfd.org/. Accessed April 17, 2026