Changes in Bowel Movements: Should You Worry About Colon Cancer?

Q: Changes in Bowel Movements: Should You Worry About Colon Cancer?

Hello： If there are changes in your diet, you don't need to worry too much about changes in your stool pattern. <br>However, you should pay attention to any unexplained weight loss, and if necessary, you can consult a gastroenterologist. <br>Changhua Hospital cares about your hea

Bowel movement issues

Hello Dr.
Tsai, about four months ago, I noticed blood in the toilet after having a bowel movement.
I went to the hospital for an examination and had a digital rectal exam, which suggested that it might be caused by hemorrhoids.
Since then, I have been paying special attention to my bowel habits.
I usually go to the bathroom three to four times a day: once in the morning, twice in the afternoon, and sometimes once at night.
Because I work out, my protein intake is relatively high, and I often eat protein bars.
In the past month or two, my stools have occasionally become flat, with a thickness of about 1 cm.
Recently, after increasing my vegetable intake, I noticed that I sometimes pass a thicker, banana-shaped stool twice a day, but afterward, it usually returns to being flat.
Aside from that, I have no other symptoms, and the blood in my stool has not recurred.
Should I be concerned about the possibility of colorectal cancer due to the change in the shape of my stool?

A, 20~29 year old female. Ask Date: 2017/12/07

Dr. Cai Anshun reply Gastroenterology and Hepatology

Hello: If there are changes in your diet, you don't need to worry too much about changes in your stool pattern.
However, you should pay attention to any unexplained weight loss, and if necessary, you can consult a gastroenterologist.
Changhua Hospital cares about your health.
Dr.
Tsai An-shun.

Reply Date: 2017/12/07

More Info

When it comes to changes in bowel movements, particularly concerning the shape and consistency of stool, many individuals often worry about the possibility of serious conditions such as colon cancer. Your experience of noticing changes in your stool, particularly the flattening of the stool, can understandably lead to anxiety about potential underlying issues. However, it is essential to approach this concern with a balanced perspective based on medical knowledge and guidelines.

Firstly, it is important to recognize that variations in stool shape can occur for a variety of benign reasons. The shape of stool can be influenced by dietary changes, hydration levels, and even stress. In your case, you mentioned an increase in protein intake due to fitness routines, which can sometimes lead to changes in bowel habits. High protein diets can alter gut motility and the composition of stool, potentially leading to firmer or differently shaped stools.

The fact that you previously experienced blood in your stool, which was attributed to hemorrhoids, is also a significant detail. Hemorrhoids can cause bleeding and discomfort, but they do not typically lead to changes in stool shape. Since you have not experienced any recurrence of blood in your stool, this is a positive sign. It suggests that the previous issue may have been resolved, and your current symptoms may not be related to a serious condition.

Regarding the specific concern about the shape of your stool being flat or thin, it is worth noting that while changes in stool shape can be a symptom of colon cancer, they are not definitive on their own. The classic "pencil-thin" stool is often cited as a potential warning sign, but it is crucial to consider this symptom in conjunction with other factors. Symptoms that warrant further investigation include:
1. Persistent changes in bowel habits: If you notice a significant and persistent change in your bowel habits, such as a marked increase in frequency or a consistent change in stool shape over several weeks.

2. Accompanying symptoms: The presence of other symptoms such as unexplained weight loss, persistent abdominal pain, changes in appetite, or blood in the stool should prompt further evaluation.

3. Family history: A family history of colorectal cancer or other gastrointestinal diseases can increase your risk and may necessitate more proactive screening.

Given your situation, where you have not experienced any alarming symptoms aside from the changes in stool shape, it may be reasonable to continue monitoring your bowel habits while maintaining a healthy diet rich in fiber, which can help normalize stool consistency and shape. Increasing your vegetable intake, as you mentioned, is beneficial for digestive health.

However, if you continue to notice that your stool remains consistently flat or if you develop any new symptoms, it would be prudent to consult with a healthcare professional. They may recommend further evaluation, such as a colonoscopy, especially considering your previous history of rectal bleeding. Regular screenings are essential for early detection of any potential issues, particularly if you have risk factors.

In summary, while changes in bowel movements can be concerning, they are often due to benign factors. Continuous monitoring and maintaining open communication with your healthcare provider will help ensure that any potential issues are addressed promptly. Remember, it is always better to err on the side of caution when it comes to your health.

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