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Doctor showing a prostate anatomy model to a patient during a consultation about urinary symptoms or prostate enlargement.

Enlarged Prostate and Constipation: What to Know

Can an enlarged prostate make it harder to pass stools? While it mainly causes urinary symptoms like frequent urination, urinary urgency, and weaker urine flow, its impact doesn’t stop there. As the prostate gland grows, it can press against surrounding organs such as the rectum and potentially affect bowel movements.


Some men may also develop chronic constipation due to pressure from the enlarged prostate or as a side effect of its medications. This article explains how prostate enlargement may contribute to constipation and offers ways to manage both urinary and digestive symptoms.

What is Benign Prostatic Hyperplasia?

As men age, the prostate gland can slowly grow larger. This condition is known as benign prostatic hyperplasia (BPH), also referred to as benign prostate hyperplasia or benign prostatic hypertrophy. It is not prostate cancer, but it can still cause uncomfortable symptoms that affect daily life.

Understanding Prostate Enlargement

BPH happens when the prostate enlarges and starts to press against the urethrathe tube that carries urine out of the body. This pressure can block urine flow and lead to a range of urinary problems. As part of the male reproductive system, the prostate's location just below the bladder and its position surrounding the urethra make it particularly prone to causing such issues when it enlarges.


Common BPH symptoms include frequent urination, trouble starting urination, and reduced urine flow. Some men also experience acute urinary retention, where they cannot urinate at all. These issues happen because the enlarged prostate makes it harder for the bladder to empty completely. Though BPH is not cancerous, it can still affect urinary function and overall prostate health.

Man holding his lower abdomen in pain, possibly experiencing urinary retention due to an enlarged prostate.

Will an Enlarged Prostate Cause Constipation?

Prostate enlargement can lead to more than just urinary symptoms. Because of where the prostate gland sits in the body, its growth may also affect how the digestive system works, especially when it comes to having regular bowel movements.

How the Prostate Affects Nearby Organs

The prostate gland is located just below the bladder and in front of the rectum. When it enlarges due to conditions like BPH, it can press against surrounding organs, including the rectum. This pressure may strain these areas and occasionally lead to challenges like constipation, especially in more severe cases of prostate enlargement.

Is Constipation a Direct Symptom of BPH?

Constipation is not a direct symptom of BPH, but in some cases, an enlarged prostate may contribute to rectal pressure, making bowel movements more difficult. The effects of urinary retention can also indirectly slow down bowel activity. Additionally, certain medications used to treat BPH or prostate conditions may have constipation as a side effect

Anatomical model of the bladder and prostate next to a stethoscope, symbolizing urologic health and prostate evaluations.

What Are the Common Symptoms of an Enlarged Prostate Gland?

Several men notice early signs of prostate enlargement through changes in urinary function. These symptoms usually develop gradually and may disrupt daily activities, sleep, and overall comfort. In some cases, erectile dysfunction may occur alongside urinary symptoms, though this is more commonly linked to aging or other medical conditions rather than directly caused by BPH. Recognizing these signs early is important to avoid more serious problems later.

Urinary Symptoms and Their Impact on Daily Life

An enlarged prostate gland can cause the following symptoms:

  • Frequent urination: Needing to urinate more often than usual, especially during the night (nocturia). This can disturb sleep and increase daytime fatigue.

  • Urinary urgency: Feeling a sudden, strong need to urinate that’s difficult to delay. This may lead to accidents or stress in public settings.

  • Weak urine stream: A slow or interrupted urine flow, even when the bladder feels full. This often leads to a longer time spent in the bathroom.

  • Difficulty starting urination: Trouble beginning to urinate, even with the urge to go. This is often due to pressure on the urethra from the enlarged prostate.

  • Dribbling at the end of urination: Leakage or dripping after finishing, which may require extra bathroom trips or changing clothes.

  • Incomplete bladder emptying: A feeling that the bladder hasn’t emptied completely, leading to more frequent returns to the restroom.

  • Acute urinary retention   (in severe cases): Inability to urinate at all, which can be painful and may require urgent medical attention.


In some cases, untreated or severe BPH may raise the risk of urinary tract infections by obstructing urine flow. Additionally, medications used to manage BPH can sometimes cause side effects such as constipation, bladder issues, or even kidney problems due to the persistent pressure on the urethra—the tube that carries urine from the bladder out of the body.

How Prostate Enlargement Can Lead to Constipation

Although BPH mainly affects the urinary system, some men also struggle with bowel movements. The connection between prostate enlargement and constipation often comes from physical pressure or treatment side effects.

The Role of Pressure on the Rectum

As the prostate gland grows, it can press against the rectum, which sits just behind it. This pressure can make it harder for stool to move through the lower part of the digestive tract, especially during a bowel movement. Over time, this can lead to chronic constipation or the feeling of incomplete emptying.


The enlarged prostate may also affect how the muscles around the rectum work, making the process of passing stools more difficult. In some cases, the discomfort caused by urinary symptoms may cause men to avoid straining, which can also slow down bowel function.

Man sitting on toilet straining to have a bowel movement due to constipation possibly linked to an enlarged prostate.

The Link Between Medication for BPH and Constipation

Some drugs used to treat prostate enlargement can also affect the digestive system. Some BPH medications may contribute to constipation, possibly by affecting how quickly stool moves through the intestines. These changes in digestive transit time can make constipation more likely, especially when combined with reduced activity or fluid intake.


Other medications used for overactive bladder, which may occur alongside enlarged prostate symptoms, can also cause the stool to move more slowly through the intestines. Men taking multiple medications for prostate health, urinary problems, or erectile dysfunction may notice changes in how often or how easily they can pass stool. It’s important to talk to a healthcare professional if medication-related constipation becomes a problem.

Blister packs of various medications that may cause constipation as a side effect of treating benign prostatic hyperplasia (BPH).

How to Manage Constipation with an Enlarged Prostate

Dealing with constipation and an enlarged prostate at the same time can be frustrating. Making small changes in daily habits can support both bowel function and prostate health without needing more medications.

Dietary Changes and Hydration

Eating more natural foods that are high in fiber can make it easier to relieve oneself. Fruits, vegetables, whole grains, and legumes help move stool through the digestive system and reduce the chance of undigested food building up in the intestines. Limiting intake of processed, low-fiber foods like white bread and packaged snacks can further support regular bowel movements.


Drinking enough water may help soften stool and support more regular bowel movements. Reducing caffeinated drinks, which can cause dehydration, may also help. For some men, adding a natural remedy like prunes or psyllium husk may support digestion and relieve constipation. These simple lifestyle changes can support the gut and help relieve BPH symptoms without extra strain on the body.

Doctor holding a plate of high-fiber fruits and vegetables that support digestion and relieve constipation linked to BPH.

Exercise and Bowel Regularity

Regular exercise not only keeps the bowels active but also supports healthy urinary function and overall prostate health. Activities like walking, swimming, or stretching a few times a week can help reduce constipation and ease urinary and bowel symptoms. Exercise also helps lower stress levels, which can contribute to both digestive and urinary problems.


Combining physical activity with relaxation techniques, such as deep breathing or meditation, can further enhance bladder and bowel control. Making movement and stress management part of a daily routine can greatly improve comfort and well-being.

Man lifting dumbbells to support prostate health and improve bowel regularity through regular physical activity.

When Should You See a Doctor?

Constipation related to an enlarged prostate often gets better with changes in diet, exercise, or medication. However, certain signs may require medical attention.


In rare cases, symptoms like unexplained weight loss or persistent pain could point to more serious conditions, such as metastatic prostate cancer. A prostate-specific antigen (PSA) blood test can help detect signs of prostate cancer or monitor prostate size over time.


It’s also essential to rule out other medical conditions that may cause similar symptoms. Knowing when to consult a healthcare professional can help prevent serious issues with the urinary tract, digestive system, or kidneys.


Here are signs that you should see a doctor:

  • Severe or long-lasting constipation  that doesn't improve with diet, hydration, or over-the-counter remedies

  • Sudden inability to pass urine or stool , which may be a sign of acute urinary retention or bowel blockage

  • Painful urination or blood in the urine , which could signal a urinary tract infection or other prostate problems

  • Ongoing abdominal pain  or pressure in the rectum that affects daily life

  • Unexplained weight loss may be a sign of several serious conditions and should be evaluated by a healthcare provider.

  • Frequent urinary tract infections, which may be a sign that the bladder isn't emptying properly

  • Worsening BPH symptoms, such as very weak urine flow, nighttime urination, or constant urinary urgency


Talking with a doctor can help identify the cause and guide the best treatment options, whether that means adjusting certain medications, trying natural remedies, or exploring surgical procedures for prostate enlargement. It’s also important to talk about constipation with your provider if symptoms persist, as it may be related to treatment side effects or other conditions. In some cases, blood tests may be needed to check for underlying issues, including prostate health concerns.

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Final Thoughts on Enlarged Prostate and Constipation

An enlarged prostate may not directly cause constipation, but it can still affect bowel function through pressure on the rectum or as a side effect of medications. While it mainly leads to urinary symptoms like urinary urgency, decreased urinary flow, and urinary retention, it can also impact nearby parts of the digestive tract.


Managing prostate health with the right diet, regular exercise, and medical support can help ease both urinary issues and constipation. Supporting both urinary and digestive health through lifestyle habits and medical care can improve daily comfort and long-term quality of life.

Frequently Asked Questions

Can BPH Cause Other Digestive Issues?

BPH may press against the rectum and slow digestion, leading to constipation or discomfort during bowel movements.

What Over-the-Counter Remedies Can Help with Constipation?

Fiber supplements, stool softeners, and gentle laxatives can help ease constipation linked to an enlarged prostate.

How Can I Prevent Constipation if I Have BPH?

Eating high-fiber foods, staying hydrated, and staying active can help prevent constipation when managing BPH symptoms.

Is Constipation a Side Effect of BPH Medication?

Yes, some medications used to treat BPH can cause constipation as a side effect by slowing bowel movements.

When Should I See a Doctor for BPH and Constipation?

See a doctor if you have severe constipation, painful urination, or worsening urinary and bowel symptoms.

Medical Disclaimer:

The information provided in this article is for educational and informational purposes only and should not be considered a substitute for professional medical advice, diagnosis, or treatment. Please consult with your healthcare provider before starting any new dietary supplement, especially if you are pregnant, nursing, have a medical condition, or are taking other medications. Never disregard professional medical advice or delay in seeking it because of something you have read in this article.

References

  1. Halawani, A., Paterson, R., Zhong, T., Du, K., Ren, R., & Forbes, C. M. (2024). Risks and side effects in the medical management of benign prostatic hyperplasia. Prostate international, 12(2), 57–64. https://doi.org/10.1016/j.prnil.2023.11.004

  2. Institute for Quality and Efficiency in Health Care (IQWiG). (2022, July 22). Overview: Benign enlarged prostate. In InformedHealth.org. Cologne, Germany: Institute for Quality and Efficiency in Health Care (IQWiG). https://www.ncbi.nlm.nih.gov/books/NBK558920/

  3. Lever, E., Cole, J., Scott, S. M., Emery, P. W., & Whelan, K. (2014). Systematic review: the effect of prunes on gastrointestinal function. Alimentary pharmacology & therapeutics, 40(7), 750–758. https://doi.org/10.1111/apt.12913

  4. Muruganandham, K., Dubey, D., & Kapoor, R. (2007). Acute urinary retention in benign prostatic hyperplasia: Risk factors and current management. Indian journal of urology : IJU : journal of the Urological Society of India, 23(4), 347–353. https://doi.org/10.4103/0970-1591.35050

  5. Ng, M., Leslie, S. W., & Baradhi, K. M. (2024). Benign prostatic hyperplasia. In StatPearls. StatPearls Publishing. https://www.ncbi.nlm.nih.gov/books/NBK558920/ 

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