Crohn's Disease
Updated Jul. 02nd, 2026 | Read Time: 6 Minutes | What You Will Learn:
- What is Crohn's Disease?
- Signs and Symptoms of Crohn's Disease
- What Causes Crohn's Disease?
- Complications of Crohn's Disease
- Conventional Treatment Options For Crohn's
- Diet & Lifestyle
- Mental-Emotional Connection
- Key Supplements for Crohn's Disease
- Crohn's Supplements That Reduce Inflammation
- Crohn's Supplements That Heal the Gut
- Crohn's Prevention Supplements
- Nutritional Information
- Reader Comments (5)
Living with ongoing digestive challenges, like Crohn's Disease, can be physically and mentally exhausting, especially if symptoms fluctuate and impact your daily life. Finding the right combination of nutrition, lifestyle support, and targeted solutions is key to maintaining balance and feeling your best. Alongside medical care, many people use Crohn's supplements to help support gut health, manage inflammation, and promote digestive well-being.
What is Crohn's Disease?
Crohn's Disease generally involves inflammation of the small intestine, but it can affect any part of the digestive tract, along the entire tube from the mouth to the anus. It is one of the two main diseases covered under the term "Inflammatory Bowel Disease" (IBD). The gold standard diagnosis of Crohn's requires a colonoscopy, in which "skip lesions" are seen. These are deep ulcerations of the intestine that affect its entire thickness. As these ulcerations heal, they are replaced with scar tissue, which can lead to a number of complications.
What Are The Signs and Symptoms of Crohn's Disease?
Crohn's has symptoms that are very similar to colitis, including bouts of abdominal pain, cramping, diarrhea, bleeding and mucous in the stools as well as vomiting. These times of "flare" can be debilitating due to pain and the frequent need to visit the washroom. They can also involve symptoms that aren't directly associated with the gut, such as: fever, arthritis, skin rashes, fatigue, joint aches, and difficulty concentrating. Diagnosis of Crohn's disease must rule out other causes of cramping and diarrhea, including acute infections, colitis, and Irritable Bowel Syndrome (IBS).
What Causes Crohn's Disease?
There is no well-established cause for Crohn's disease, although theories still abound. One possible underlying cause of Crohn's disease may be an autoimmune reaction. This is when the body's immune system accidentally attacks its own cells. Other causes include low dietary fibre, high dietary sugar and refined carbohydrate intake, food allergies, stress, unresolved emotional conflicts, parasitic infection and antibiotic use. Also, smokers are twice as likely to be affected as non-smokers.
Complications of Crohn's Disease
Because the inflammation of Crohn's involves the entire thickness of the digestive lining, it can cause holes to form in the intestine, which can then create fistulas (improper connections) between the digestive tract and other organs. This can create any number of problems, including anemia, intestinal blockage, and organ damage. The scar tissue formed by healing the full-thickness ulcers can also cause constrictions in the intestines known as "strictures" that can prevent the proper flow of food and feces through the digestive tract. These regions of scarring cannot absorb nutrients or water like the normal digestive tract, which eventually results in weight loss and nutrient deficiencies as well.
Conventional Treatment Options For Crohn's
Conventional treatment of Crohn's disease involves the use of anti-inflammatory and immunosuppressant medications. Although these medications decrease the symptoms, they do not address the root cause of the problem. They may also contribute to nutrient deficiencies.
Signs of nutrient deficiencies can include: clouded thinking, dizziness, hair loss, brittle hair and nails, flaking skin, and fatigue. Some medications have side effects associated with suppression of the immune system, such as increased risk of bacterial and viral infections.
Diet & Lifestyle
The best and only way to relieve symptoms of Crohn’s disease is by making alterations to your diet. You can start with a digestive cleanse, like a liquid diet, consisting of healthy fruit and vegetable juices. It’s important that these are alkalinizing juices such as grape, carrot, apple and pineapple. The diet should at least be a low residue diet. This cleanse will also allow you to eliminate processed and refined foods, as well as any foods you are sensitive to. After the initial cleansing period, you can begin to add foods back into your diet – focus on including water-soluble fibre, vitamins and minerals found in complex carbohydrates. Drinking plenty of water will help to flush the intestines.
Consume fermented products like yogurt, kefir, quark, buttermilk, natural cheeses, tempeh, saurkraut to replenish the friendly bacteria that assist with nutrient digestion. If dairy is a sensitivity, avoid fermented dairy as well.
Food to consume: predominantly vegetarian diet, raw vegetables and fruits, whole grains, brown rice, potatoes, carrots, turnips, soy products and green drinks. Use water-soluble fibres like chicory root, oat bran or apple pectin. Broil or bake fish and meats instead of frying. Steam vegetables lightly.
Mental-Emotional Connection
Many Crohn's sufferers will mention stress, worry, and mental-emotional connection to their symptoms. Tackling the emotional aspects of colitis should also be a priority. Reducing stress and increasing exercise promotes proper bowel functioning. Abdominal massage and hydrotherapy can be helpful in the healing stages of colitis.
Key Supplements for Crohn's Disease
There exists a wide variety of supplements that can benefit Crohn's patients. It is very important to time them appropriately. Supplements that are beneficial during remission can be problematic during a flare. In general, treatments targeted at reducing Leaky Gut can also significantly help to reduce colitis flares. See below for a step-by-step guide on repairing the gut lining.
Crohn's Supplements That Reduce Inflammation
There are a number of supplements that can reduce gut inflammation, but some of the best are:
Fish Oil
This oil is rich in omega 3 fatty acids and has been shown to reduce inflammation, improve mood, thin the blood, and reduce blood pressure.
Boswellia
This herb is renowned for its ability to reduce systemic inflammation in the body. Although it has been most thoroughly researched for the treatment of arthritis, its use can be expanded to other inflammatory conditions.
Curcumin
Another herb that has been established for its anti-inflammatory properties, curcumin (turmeric) can be added to your cooking or supplemented directly as a great way to reduce any inflammation in your gut.
Crohn's Supplements That Heal the Gut
There are a number of supplements that can help to reduce inflammation and speed the healing of the gut lining.
L-Glutamine
This amino acid can be considered the single most important supplement for restoring the integrity of the gut lining. It is a major food source for the enterocytes, and providing food allows them to replicate and heal regions of damage.
DGL (Deglycyrrhizinated Licorice)
Licorice is a soothing and healing herb that can soothe the intestinal lining directly and also acts to regulate the immune system and help calm any ongoing inflammation.
Demulcents
This class of herbs coat and protect the intestinal lining from any further damage. By protecting the lining, they give the enterocytes time to heal. Some examples are marshmallow and slippery elm.
Crohn's Prevention Supplements
Once the gut has been repaired, it is important to help it maintain its integrity after this intensive healing regimen. One important means of doing this is by supplementing with a probiotic. Probiotics help the body to properly digest food, and also protect against colonization with "bad" bacteria and yeast. They can also help to reduce the immune response to gut contents, and thus help to keep the immune system in check.
In addition to preventative supplementation, diet and lifestyle changes are essential to maintaining periods of remission for as long as possible. Reducing or better coping with stress, eating well, and exercising are all essential to maintaining health in those suffering from Crohn's.




I like the article on Crohns as I have Crohns and struggle sometimes
This is very informative and looking forward to trying some of the supplements they are suggesting
Lots of really good information, I didn’t know know there was so much information on the site. I normally just order my supplements
Hello Tammy,
We're so glad you found our articles! They're a great way to learn more about the supplement's you're taking, any health concerns you have or even to find new, healthy recipes! Hope you enjoy them and happy reading!
Stay healthy & well!
I am studying the human gut microbiome in health and disease, and my postdoc mentor studied the effect of the microbiome as well as the microbiome and diet, on IBD. So, this is a topic of interest to me! This was an excellent and well-written article. Also, I know someone with Crohn's and indeed, as with other irritable bowl conditions, it can take a toll on mental health. So, I appreciate you mentioning that aspect as well, NN! I will be reading more about some of the natural remedies you list (interested in how they may interact with the microbiome!)
Hello Rachel,
Thank you for sharing and best of luck with your studies. We're glad you found this topic on Crohn's to be of interest and we love receiving your comments. Discover more on gut health in this article: https://www.nationalnutrition.ca/articles/health-concerns/ibs/
I have a friend who suffers Crohn's disease. But, she has never told me, in detail, what it meant. Literally having HOLES form in the intestine is scary. And not only HOLES but HOLES that can then create fistulas that link up the digestive tract and other organs (obviously not correctly). Then, these weird linkups, causing all sorts of problems and EVEN THE SCAR TISSUE FROM HEALING IS A PROBLEM; it can cause constrictions in the intestines known as "strictures" and then nothing in the intestine can move through right and the nutrients are not absorbed. YIKES YIKES YIKES. I am so happy I am healthy. My friend, she is a true warrior. I will tell her that tomorrow!