Is Broccoli Good for Constipation?

DetoxWater Editorial Team•Published November 5, 2026

Yes, broccoli can help with mild constipation when it is part of a fiber-rich diet with adequate fluid, because its fiber adds bulk to stool and can help it move through the bowel. Direct evidence for mature broccoli is limited: studies have tested broccoli sprouts or a mixed fiber supplement rather than broccoli alone. Increase fiber gradually to reduce gas and bloating.

Can broccoli help with constipation?

Broccoli is a useful food to include if you are constipated and do not usually get much fiber. It is not a laxative, and eating it does not guarantee a bowel movement. Constipation can have several causes, including medications, changes in routine and medical conditions, so adding fiber will not help everyone.

For a wider range of options, see the best foods for constipation. A varied diet can make it easier to get fiber without relying on a large amount of broccoli at one meal.

How does broccoli help bowel movements?

Broccoli contains dietary fiber, the part of plant food that is not fully digested. Some of its fiber adds bulk to stool, which can help it move through the bowel. Fiber also interacts with water in the digestive tract, helping support stool consistency.

Eating broccoli provides the fiber; simply steeping it in water is not equivalent. Fiber is just one part of the picture, however, and more is not necessarily better if it makes you uncomfortable or your constipation has another cause.

Fluid matters alongside fiber. For hydration options, see the best drinks for constipation. If you have been advised to limit fluids because of a medical condition, follow your clinician’s advice rather than increasing your intake on your own.

What does the evidence say about broccoli and constipation?

A 2018 study of 48 participants compared daily broccoli sprouts with alfalfa sprouts over 4 weeks. Participants in the broccoli-sprout group reported improvements in their overall constipation scores and the time spent trying to pass stool; the alfalfa-sprout group did not show those improvements. The study involved sprouts, not mature broccoli, so it cannot establish that an ordinary serving of broccoli has the same effect.

A 2015 randomized trial of 96 young adults with constipation found improvements in bowel symptoms with a fiber-rich powder compared with a control powder. The tested powder contained chicory, broccoli and whole grains, so the results cannot be attributed to broccoli alone.

Together, these studies offer limited, indirect support for broccoli as part of a fiber-rich approach. They do not establish a specific serving of broccoli as a treatment or show how quickly it will work. Larger studies of broccoli itself would be needed to determine its particular effect.

How can you use broccoli for constipation?

If you do not regularly eat broccoli or other high-fiber foods, start with a small portion of cooked, chopped broccoli. Add it to a meal and increase the portion gradually if you tolerate it. A sudden increase in fiber can cause gas, bloating or abdominal discomfort.

Cook broccoli until it is tender if that makes it easier for you to eat. Cooking does not eliminate its fiber. You can also eat washed raw broccoli if you prefer it and it does not bother your digestion; neither form has been proven to work better for constipation.

Keep your overall habits in mind rather than expecting one food to solve the problem. Eat a variety of fiber-containing foods, drink enough fluid for your needs and allow yourself time to use the toilet without straining. Physical activity may also help support regular bowel habits.

If constipation continues despite these changes, ask a clinician or pharmacist about next steps rather than repeatedly increasing the amount of broccoli. Some causes need a different approach, and a clinician can help assess whether a medication or another factor might be contributing.

Who should be careful, and when should you see a doctor?

Broccoli can cause gas or bloating, especially when you increase your intake quickly. If you have irritable bowel syndrome or notice that broccoli makes your symptoms worse, try a smaller portion or discuss alternatives with a clinician or dietitian. More fiber can sometimes worsen symptoms, particularly when constipation has another underlying cause.

If you take warfarin, keep your intake of vitamin K-rich foods such as broccoli consistent and discuss significant dietary changes with your clinician. Do not stop or adjust medication on your own. During pregnancy, or when a child has persistent constipation, consult a clinician for individual advice.

Seek urgent medical care for severe or worsening abdominal pain, vomiting, a swollen abdomen with inability to pass gas, black stools, or a large amount of rectal bleeding. Contact a clinician promptly about blood in the stool, unexplained weight loss, a new persistent change in bowel habits, or constipation that does not improve. Do not try to manage a possible bowel obstruction by adding more fiber.

Frequently asked questions

Is frozen broccoli as useful as fresh broccoli for fiber?

Yes. Frozen broccoli still provides fiber and can be a convenient alternative to fresh broccoli.

Does the broccoli stalk contain fiber?

Yes. The stalk contains fiber and can be eaten along with the florets. Peeling the tougher outer layer can make it easier to eat.

Does blending broccoli remove its fiber?

Blending broccoli retains its fiber if you consume all the blended solids. Straining the mixture can remove some fiber.

Sources

  1. Daily intake of broccoli sprouts normalizes bowel habits in human healthy subjects. Journal of clinical biochemistry and nutrition (2018). PubMed 29371757
  2. A Controlled, Randomized, Double-blind Trial to Evaluate the Effect of Vegetables and Whole Grain Powder That Is Rich in Dietary Fibers on Bowel Functions and Defecation in Constipated Young Adults. Journal of cancer prevention (2015). PubMed 25853105