IBS with Constipation (IBS C): How Does IBS Cause Constipation and How to Treat IBS Constipation

IBS Irritable Bowel Syndrome While most people associate IBS with diarrhea, IBS with constipation (IBS-C) is also a reality for millions of people around the world. Let’s look at what causes IBS constipation as well as some possible remedies.

Most people are familiar with what it’s like to have difficulty producing a bowel movement. The occasional bout of constipation is nothing to panic about, but if you’re having fewer than three bowel movements every week and it goes on for an extended period of time, it might be chronic constipation. When stomach pain is experienced along with chronic constipation, you could be diagnosed with IBS constipation (IBS-C).


When someone has constipation, it is due to slow or weak contractions in the abdomen. This causes more water to be reabsorbed from waste material in the large intestine, leaving stools that are hard and either really small like pellets or very large.

What Causes IBS C?

IBS-C causes are generally unknown, but we can tell you that people who have bowel contractions that are too fast can get IBS diarrhea, while those who experience contractions that are weak or too slow can end up with IBS constipation.

Research into IBS is ongoing. However, there are a few theories regarding potential causes:.

  • Sensitive nerves: A theory that the nerves in the intestines may be extra sensitive, leading to pain and discomfort in the gut.
  • Fluid absorption: A belief that the colon may be absorbing too much fluid from the stool or the muscles in the colon are moving too slowly, which can cause the stools to become too dry and hard to pass.
  • Brain–bowel connection: There could be a miscommunication between the brain and the bowel that leads to a change in bowel movements.
  • Gut bacteria: A theory that strains of gut bacteria in IBS sufferers are different from those who don’t have IBS. The thought is that IBS is the result of bad strains outnumbering good gut bacteria.

IBS with Constipation Diet Plan

There is a diet plan for IBS sufferers with constipation. Research, including anecdotal evidence, shows that there are certain foods you can eat with IBS constipation that will help ease symptoms. Here we’ll cover some of the most common approaches to diet for IBS with constipation:

Foods to eat for IBS constipation:


It helps a lot of people with symptoms of IBS-C since it makes it easier to pass stools. Nutritionists generally recommend about 25 grams of fiber each day for women and 38 grams for men. If you are over the age of 50, you might need a little less fiber. Whole grain bread and cereals, fruits, vegetables, as well as beans contain fiber. You can replace snacks like chips and crackers with cheese, fruit, or a salad to increase fiber intake. If you eat the right foods, you should get ample fiber, but you can also take fiber supplements.

Keep in mind that there are two types of fiber—soluble and insoluble. Insoluble fiber has a tendency to cause more gastrointestinal reactions in people with IBS. It is also important to remember to add fiber to the diet slowly, since quickly adding it can actually make constipation worse. As you gradually increase fiber into your IBS-C diet, you should also increase intake of water to keep stools soft. Research suggests that fiber is effective in mild to moderate IBS-C cases.

Prunes and liquids

Another part of an IBS-C diet is fruity foods that are high in sugar sorbitol, such as prunes and prune juice, which can help loosen bowels. Like fiber, you have to be careful not to consume too much all at once because it could cause bloating and cramping. In some people, prunes have the opposite impact and the condition goes from constipation to diarrhea.

Some carbs

A high protein and low-carb diet can actually lead to constipation. You do need protein, but also carbs from fruits and vegetables to help keep your digestive tract working properly.

More bacteria

Since our stools are mostly made up of bacteria, it is important to support good bacteria to make good stools. If you eat fermented foods on a regular basis, like our ancestors did, you can get more good bacteria in your gut. You can also increase good bacteria by taking probiotics. Some people find that eating a yogurt called SCD legal yogurt—which is lactose-free fermented yogurt—on a regular basis is helpful.

Just as there are foods to include in an IBS-C diet, there are foods to avoid with IBS constipation. For years, people have complained about symptoms flaring up after they consume certain foods. While everyone is different in terms of their IBS and food tolerance, there are some common foods to stay away from with IBS constipation.
Some people are fortunate that a change in diet is all it takes to end constipation, but for others, it is a combination of diet and other treatment. In terms of diet, the IBS constipation foods to avoid are outlined below.

Foods to avoid with IBS:

  • Refined bread and cereals
  • Processed foods, including chips
  • Coffee, alcohol, and carbonated drinks
  • Dairy products such as cheese
  • High-protein diets
  • White rice
  • Pastries and cookies

Diet tips for IBS constipation sufferers:

  • Keep a food journal: This will help figure out what foods are triggering your symptoms. If you see a pattern, eliminate the food from your diet. Cut foods one at a time because cutting several won’t help you pinpoint which is causing you problems.
  • Make simple meal changes: Eating smaller meals more often can reduce symptoms. Don’t skip breakfast, since it activates the colon more than any other meal, and dine at a leisurely pace. Eating on the run or at your desk when you are rushed can trigger symptoms.

IBS with Constipation Natural Remedies

Natural treatment for IBS constipation is also possible. Studies show that reducing stress can help improve symptoms. There are many different ways you can decrease stress in your life, such as participating in regular exercise, doing yoga, or meditation. You can ease stress by engaging in simple activities like taking a walk, getting a massage, listening to your favorite music, taking a bath, or even reading a good book.

Some people who suffer from IBS find that behavioral therapy helps. This is an approach that teaches you how to change the way you react to certain events. It can involve cognitive therapy, hypnosis, biofeedback, and relaxation therapy.

There are also cases where alternative therapies like acupuncture and herbs help relieve symptoms of IBS-C. If you want to try alternative therapies, it is always a good idea to discuss them with your doctor first.

Other Ways to Relieve IBS Constipation

We have looked at what to eat and what not to eat with IBS constipation, as well as natural remedies, but what about other ways to relieve uncomfortable signs and symptoms? Here are a few options, but keep in mind that what works for one person may not work for another person. Often times, it is a matter of trying a few different treatments until you find one that suits you.

  • Laxatives: These can help you have a bowel movement but come with a warning. They work for occasional constipation but can be harmful if you take them regularly. They also do not treat all the symptoms of IBS such as bloating and cramping.
  • Prescription medications: There are medications that individuals can take for IBS-C when other treatments don’t work. Some of them do have side effects, such as diarrhea, abdominal pain, and nausea. Certain IBS medications are not appropriate for those under the age of 17.
  • Antidepressants: A low dose of antidepressant may be used in some cases to treat IBS symptoms. They are able to block the brain’s perception of pain in the abdomen.


IBS-C can be challenging, so you should not try to find a remedy all on your own. Work with a doctor to find a good treatment plan. Remember that a combination of different approaches might be required and dedication to a specific diet has strong potential to keep symptoms at bay.

With proper management, many people are able to manage IBS-C and live happy, active lives.




Related Reading:

IBS vs. lactose intolerance: Causes, symptoms, risk factors, and complications

IBS diet: Foods to eat and foods to avoid