Can Your Bathroom Habits Reveal Cancer? Doctor-Approved Warning Signs You Shouldn't Ignored

Most people don't consider their bathroom habits twice. Sometimes alterations in stool and/or urinary frequency, color, or blood will give valuable clues to health. A change in your bathroom routine does not mean you have cancer, but a new, persistent or unexplained change should not be ignored. 

Some bowel and bladder symptoms may be associated with colon, rectal and bladder cancers. They can also occur as a result of piles, infection, dietary changes, medications or other general conditions. Therefore, it is crucial to understand the changes and how long they have persisted.

Can Bathroom Habits Really Be Linked To Cancer?

Dr Sachin Sekhar Biswal, Consultant Medical Oncologist, Manipal Hospitals, Bhubaneswar,  says, “Yes, certain persistent and unexplained changes in bowel or bladder habits can sometimes be associated with cancers of the colon, rectum, bladder or prostate. However, these symptoms are common and are often caused by non-cancerous conditions. The key concern is a change that persists or occurs along with other warning signs.”bathroom habits cause cancer

This distinction is important. A single episode of constipation after changing your diet is very different from a bowel pattern that has changed and stayed that way for several weeks.

ALSO READ- Ignoring Constipation? You May Be Missing an Underlying Health Problem: Know When to Worry

Bowel Changes That Should Not Be Ignored

The bowel can be affected by several conditions, including colorectal cancer. Possible warning signs include:

• Persistent constipation or diarrhoea
• A new and lasting change in bowel habits
• Blood mixed with or coating the stool
• Black or tarry stools
• A persistent feeling that the bowel has not emptied completely
• A lasting change in the shape or consistency of stools
• Abdominal discomfort along with bowel changes
• Unexplained weight loss or fatigue

Dr Biswal says, “Persistent constipation or diarrhoea, a noticeable change in stool pattern, blood in the stool, black or tarry stools, a persistent feeling of incomplete bowel emptying, or a new and lasting change in stool shape should be evaluated, especially when there is no obvious explanation.”

Research published in JAMA Network Open looked specifically at early-onset colorectal cancer. The review included 81 studies involved over 24 million people who were under 50. For those with early onset CRC, blood in stool and abdominal pain and bowel changes were the most common symptoms. When these symptoms continue without any obvious other cause, the authors emphasized that it is important to be aware of their symptoms. 

Does Blood In The Stool Always Mean Cancer?

No. Blood in the stool is commonly caused by haemorrhoids, anal fissures and other gastrointestinal problems. But repeated bleeding should not automatically be blamed on piles.

“Blood in the stool can occur with colorectal cancer, but it is also commonly caused by haemorrhoids, anal fissures and other gastrointestinal conditions,” says Dr Biswal. “Bright red blood should not automatically be assumed to be piles, particularly if it keeps recurring or is accompanied by changes in bowel habits, abdominal discomfort, anaemia or unexplained weight loss.”

blood in stool

The colour and pattern of bleeding can provide clues, but they cannot establish the cause. A doctor may need to assess the symptoms, medical history and risk factors before deciding whether further tests are needed.

A 2023 Cancer Epidemiol study evaluated early-onset colorectal cancer cases and found that rectal bleeding and altered bowel habits were strongly associated with an increased risk of colon and rectal cancer, with age influencing the degree of risk.

What Urinary Changes Can Be A Warning Sign?

The bladder and urinary system can also produce symptoms that need attention.

One of the most important is blood in the urine, medically called haematuria. It can be visible or detected only through testing.

Other urinary changes can include:

• Passing urine more frequently
• A sudden or persistent urge to urinate
• Difficulty starting urination
• A weaker urine stream
• Pain or burning while passing urine
• Repeated urinary symptoms without a clear cause

Dr Biswal says, “Blood in the urine, particularly when it occurs without pain, should not be ignored. Persistent changes such as increased urinary frequency, urgency, difficulty starting urination or a weaker urine stream may also require evaluation.”

However, urinary symptoms are not automatically signs of cancer. Urinary tract infections, kidney stones and prostate enlargement are common causes.

Can Urinary Problems Mean Prostate Cancer?

This is where an important misconception comes in. Urinary problems are often associated with prostate cancer, but they are not a reliable way to detect it. Benign enlargement of the prostate becomes increasingly common with age and can cause difficulty starting urination, a weak stream and frequent urination.

A 2022 BMC Med review highlighted the urinary symptoms and prostate cancer. The scientists observed, however, that early prostate cancer may develop in an area of the prostate which is not necessarily blocking the urethra. This can mean that urinary symptoms are not severe, even if there is prostate cancer.

Therefore, men should not wait until they experience urinary issues to speak with their physician about prostate cancer risk and/or appropriate screening, if they do have any risk factors.

When Should You See A Doctor?

A bathroom change deserves more attention when it is new, persistent or unexplained. Dr Biswal recommends medical evaluation when symptoms continue, particularly when they occur with other warning signs.

bathroom habits cancer

These include:

• Blood in the stool or urine
• Unexplained weight loss
• Persistent abdominal or pelvic pain
• Ongoing constipation or diarrhoea
• Repeated changes in bowel habits
• Persistent urinary changes
• Unexplained fatigue
• Anaemia
• Several symptoms occurring together

Dr Biswal says, “A single episode does not necessarily indicate cancer, but recurrent symptoms should not be self-diagnosed or ignored.”

ALSO READ- Blood in Stool: What Its Colour Can Reveal About the Possible Cause

Conclusion

Your bathroom habits cannot diagnose cancer. However, they can occasionally give a sign that there is a problem to be investigated. If bowel movements are happening in a different way, if there is blood in the stool every time, if there is blood in the urine that doesn't have a known cause, or if there are other symptoms in the urine that don't have a known cause, it is a good idea to see a doctor. 

Although most of such symptoms are not caused by cancer, it's good to get them checked out so that you can determine what's actually going on. Early identification of warning signs and having an assessment before a delay can push the diagnosis of cancer to a future date.