Constipation and Its Link to Colon Health - Gastroenterology and Hepatology

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Regarding issues of fecal retention and constipation?


Hello, I would like to ask about my situation.
During my junior high and high school years, I mainly ate fast food, rarely consumed vegetables, and exercised little, which led to long-term constipation.
I usually have a bowel movement every five days, and my stools are large and hard.
I thought it was normal since I’ve been like this since childhood, but recently I came across some news and information suggesting that long-term constipation and fecal impaction can lead to colorectal diseases.
Is this true? (I found one report stating that "there is currently no known correlation between the two," but others suggest there is, which makes me a bit worried.) Given my situation, even though I am relatively young, what is the risk?
I have recently started eating vegetables for the past 2-3 days and have been cycling indoors for 40-50 minutes daily.
However, during my bowel movement today, the stool started off shaped like a log (about half the size of what it used to be), but later it became large and flat.
Is this normal? (I suspect it might be because I haven't eaten much lately, only having breakfast and dinner.) Would you recommend that I go to the hospital for an examination, or should I maintain my vegetable intake and exercise routine and observe for a few more days? I apologize for asking so many questions, and I appreciate your time in helping me understand.
Thank you.

ar, 10~19 year old female. Ask Date: 2011/06/30

Dr. Lin Minghui reply Gastroenterology and Hepatology


Hello: Regarding your question, here are the responses: (1) Chronic constipation and excessive straining during bowel movements can lead to hemorrhoids, anal fissures, rectal prolapse, and intestinal obstruction.
(2) The causes of constipation and irregular bowel movements include slow colonic transit, poor pelvic floor function, and inability to relax the anal sphincter during defecation.
(3) Lack of exercise can worsen constipation; increasing the intake of vegetables and fruits can enhance stool bulk and promote colonic motility.
It is also important to maintain adequate hydration and establish a regular bowel habit.
(4) Moderate exercise, along with fiber and fluid intake, should be a consistent practice.
(5) If bowel movements remain difficult, or if there is weight loss, blood in the stool, or anemia, it is advisable to seek medical attention.
Wishing you good health, Dr.
Lin Ming-Hui, Taoyuan Hospital, Department of Health.

Reply Date: 2011/06/30

More Info


Constipation is a common gastrointestinal issue that can significantly impact overall health, particularly when it becomes chronic. Your concerns about the relationship between long-term constipation and colon health are valid and warrant a thorough discussion.

Firstly, it is essential to understand what constipation is. It is generally defined as having fewer than three bowel movements per week, and it can manifest as hard, dry stools that are difficult to pass. In your case, having bowel movements only every five days, accompanied by hard and thick stools, qualifies as chronic constipation. This condition can lead to various complications, including hemorrhoids, anal fissures, and, in severe cases, fecal impaction.

Regarding your concern about the link between chronic constipation and colon diseases, there is ongoing debate in the medical community. Some studies suggest that prolonged constipation may increase the risk of developing conditions such as diverticulitis, colorectal cancer, and other gastrointestinal disorders. The theory is that prolonged stool retention can lead to increased pressure in the colon, causing changes in the intestinal lining and potentially leading to inflammation or other pathological changes. However, it is also important to note that not all experts agree on this point, and some research indicates that there is no direct correlation between constipation and serious colon diseases.
Given your history of poor dietary habits, such as a diet high in fast food and low in fiber, it is commendable that you have started incorporating more vegetables into your diet and engaging in regular exercise. A high-fiber diet is crucial for promoting regular bowel movements and preventing constipation. Fiber adds bulk to the stool and helps it pass more easily through the intestines. The recommended daily intake of fiber is about 25 grams for women and 38 grams for men, but most people do not meet these guidelines.

As for your recent bowel movements, the change in stool consistency from a more cylindrical shape to a flatter, more fragmented appearance could be attributed to several factors, including dietary changes and hydration levels. When you start eating more fiber, it can take some time for your digestive system to adjust, and you may experience variations in stool consistency during this transition. It is also essential to ensure you are drinking enough water, as hydration plays a critical role in stool formation.

In terms of your health risks, while being young may reduce the likelihood of severe complications, chronic constipation should not be ignored. It is advisable to monitor your symptoms closely. If you notice persistent changes in your bowel habits, significant abdominal pain, or blood in your stool, you should seek medical attention promptly.

Regarding whether you should visit a doctor, it may be beneficial to consult with a healthcare professional, especially if your symptoms do not improve with dietary changes and increased physical activity. A doctor can perform a thorough evaluation, which may include a physical examination and possibly imaging or other diagnostic tests to rule out any underlying conditions.

In summary, while there is some concern about the potential link between chronic constipation and colon health, the evidence is not definitive. However, maintaining a healthy diet rich in fiber, staying hydrated, and exercising regularly are crucial steps in managing constipation and promoting overall digestive health. If your symptoms persist or worsen, do not hesitate to seek medical advice for further evaluation and management.

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