Can corn cause constipation?

In this article, we will answer the question “Can corn cause constipation?”, and what type of foods cause and prevent constipation. 

Can corn cause constipation?

Yes, corn can cause constipation. Whether you eat it directly from the cob, as nibbles, or in the form of popcorn, it has its fiber intact. The high fiber content of corn is what causes constipation in some people. The symptoms worsen if your water intake is low.

Bur corn is a common allergen as well. Due to the corn allergy, an individual may also experience constipation. Corn allergy is not related to the high fiber content of the corn but to certain proteins present in it.

These proteins trigger an immune reaction or allergic response of which constipation is a common symptom. If you have a corn allergy, refrain from eating corn in any form, whether whole or refined.

If you do not have a corn allergy, the extra fiber can help you with both, diarrhea and constipation. It does so by regulating the bowel movements, adding bulk to the stool, and easing its passage.

On average, a healthy individual needs about 28g of fiber daily and a cup of whole cor kernel provides 3.5g of fiber.

Refined corn products such as corn chips, and corn starch are laden with carbs and no fiber. Digesting such a high amount of carbohydrates at once can be difficult for some people. Moreover, it nourishes the pathogenic bacteria inhabiting your gut.

What types of food cause constipation? 


Alcohol acts as a diuretic which means it promotes urine production. Therefore, consuming excessive amounts of alcohol can leave you dehydrated which leads to constipation. However, there is a lack of scientific evidence that confirms this effect of alcohol. 

Most people experience diarrhea after alcohol consumption. So, we can safely say that different people react differently to excessive consumption of alcohol.

Gluten-containing foods 

Gluten is a protein that some people are intolerant to. Celiac disease or gluten intolerance is not uncommon. Cereals like wheat, barley, rye, etc have a high gluten content.

Gluten-sensitive individuals may experience constipation after consuming gluten-containing foods. Chronic constipation is a common symptom of celiac disease. Consult with your doctor to determine whether gluten is causing your constipation or not.

Processed grains 

Processed grains have their germ and bran removed. This means the processed grains do not have fiber. Fiber plays an important role in regulating bowel movements by adding bulk to your stool.

For some people, eating more fiber can help relieve constipation. For others, excessive fiber intake becomes the cause of constipation. 

If your fiber intake is good but you suffer from constipation, do not add more fiber to your diet as it can backfire. In this case, it is better to slowly reduce your fiber intake and see if it helps.

Milk and dairy products 

Some people, especially children, are allergic to the proteins present in cow’s milk. Chronic constipation in children may be caused by dairy milk or dairy products.

This is different from lactose intolerance. Because individuals with lactose intolerance experience diarrhea in response to eating dairy. More research is needed to probe any link between constipation and dairy products.

Red meat 

Red meat is rich in protein but low in fiber. So, it tends to make you feel full for longer periods but also reduces your fiber intake. Taking a diet that is low in fiber can have long-term effects including an increased risk of constipation.

In addition to this, red meat is rich in fats that digest slowly. Consuming excessive amounts of low fiber, high-fat foods such as red meat that digest may cause constipation.

Fried or fast foods 

Similar to red meat, fried or fast foods are rich in fats and low in fiber. Such foods take more time to digest and may cause constipation. Moreover, fast foods are laden with sodium. 

Since sodium is a diuretic, it removes the water from your body and stool, leaving you dehydrated and a hard stool making it difficult to defecate.


Persimmons can be sweet or harsh depending upon the variety. The astringent variety of persimmons has a high tannin content. 

Tannins are anti-nutritional factors that interfere with digestion and slow down bowel movements by inhibiting gut secretions and contractions, respectively. 

The bottom line is that you should refrain from eating too many persimmons, particularly the astringent ones to avoid or not further aggravate constipation.


Bananas are included in the BRAT diet, designed for diarrhea patients. Bananas slow down bowel movements and excessive consumption can cause constipation. 

Moreover, you should steer clear from eating ripe bananas if you have IBS. Unripe bananas are low-FODMAP and may be somewhat tolerable for IBS patients. 


Some people are allergic to eggs and cosnti[ation may be one of the symptoms. Eggs are rich in proteins and low in fiber so excessive consumption may cause constipation. However, more research is needed to figure out why eggs cause constipation in some individuals.

What types of food prevent constipation? 

Fresh veggies and fruits, whole grains and brown bread, pasta, and rice help prevent constipation. All of these foods are rich in fiber. This is how important fiber is in preventing constipation. 

The recommended amount of fiber depends on age, sex, and stage of life. According to the Institute of Medicine, adults should consume 19-38 grams of fiber per day. 


In this article, we answered the question “Can corn cause constipation?”, and what type of foods cause and prevent constipation. 


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