Each one of us is born a one-of-a-kind individual. Your hair color, eye color, facial features, height, skin color, and the shape of your fingers and toes — everything about you is uniquely yours, a masterpiece of genetics and environment that shapes your physical body.
When you think about your outer appearance this way, it only makes sense that your inner anatomy is unique as well. While most people have the same basic anatomy, there is significant variation in the exact size, shape, and even orientation of many organs inside our bodies. Let’s take a closer look at one body part whose variation may be at the root of the bloating and constipation plaguing people all around the globe: the colon.
What Is the Colon?
The colon, also known as the large intestine, is the last section of your digestive tract. As you may remember from science class, the digestive tract starts at the mouth—where food goes in and ends at the anus—where stool leaves your body. After food leaves your stomach, it travels through the small intestine, a long, winding tube where most digestion and nutrient absorption takes place. From there, it moves into the much shorter large intestine, or colon.
The colon’s main jobs are to absorb water and electrolytes, form stool, and produce certain vitamins (like Vitamins K and B) through fermentation carried out by the bacteria living inside the colon.
Not All Colons Look the Same
Although anatomy textbooks display a tidy, standard-looking colon, in real life there is significant variation in both the length and configuration of people’s colons. This has been studied for over 100 years, with anatomists and physicians measuring and documenting colon length in infants, children, and adults. The data makes one thing clear: people are born with different colon lengths.
Modern imaging studies give us an even better look at this variation. Some people have a colon that is significantly longer than average, with more twists and folds than the textbook image suggests. This is called a dolichocolon (from the Greek dolicho, meaning “long”) or a redundant colon. Depending on the study, between 2% and 28% of people may have one.
Could a Longer Colon Be Causing Your Symptoms?
Since part of the colon’s job is to absorb water and ferment undigested food, it stands to reason that a longer colon absorbs more water — leading to harder, drier stool — and ferments food for a longer period of time, producing more gas. Several studies support this: people with a dolichocolon are more likely to suffer from constipation.
This isn’t true for everyone with a redundant colon, but it can be a significant contributing factor for people who feel they’ve struggled with constipation their entire lives.
Getting the Right Evaluation
Of course, it’s always important to rule out other causes of constipation and bloating before pointing to colon length. Several tests can help identify why someone is struggling. High on the list is a colonoscopy, which is valuable not only for diagnosing structural issues but also for detecting and preventing colon cancer by removing polyps before they become cancerous. Other tests include colon transit studies using special markers, evaluations of pelvic floor and anal muscle function, and imaging studies to observe how your body moves stool.
If all other testing comes back normal, but imaging or a colonoscopy reveals a redundant colon, that anatomy may well be contributing to your symptoms. It’s worth noting that redundant colon is not currently listed as a cause of constipation in major gastroenterology guidelines, including the European and American perspectives on chronic constipation. However, based on both the available evidence and the logical mechanics of how the colon functions, this appears to be an oversight worth revisiting.
What Can Be Done?
There is no single cure for constipation related to a redundant colon, but several approaches can help. The standard recommendations — increasing fiber through whole, healthy foods, staying well hydrated, and getting regular physical activity — remain a solid foundation. Various laxatives and prescription medications are also available. Working closely with your physician to find the right combination of treatments is key.
In rare cases, patients have had a portion or all of their colon surgically removed to address severe constipation. This is considered an extreme option with real risks and is not a common recommendation.
The Bottom Line
Having a colon that is longer or more folded than average is simply one way your body is uniquely yours. For some people, it means they rarely experience constipation or bloating. For others, it may be a lifelong source of discomfort they’ve never been able to explain.
If you’ve struggled with constipation or bloating for as long as you can remember, a thorough evaluation is worth pursuing. The right diagnosis leads to the right treatment — and finally, some relief.