Do Oreos Cause Diarrhea? - 6 Reasons They Might! - Gut Advisor (2024)

One of the most recognizable and popular cookies in the world today, Oreos were originally produced by the National Biscuit Company in 1912. The name Oreo was allegedly derived from the word “or”, the French term for “gold”, which was the supposed color of the original packaging.

The delicious white filling flanked by two distinctively designed chocolate biscuits slowly gained ground until it became almost everybody’s favorite snack. Devouring just one Oreo simply isn’t enough for most people. Several of the cookies have to be eaten in one sitting so that you could sometimes end up with certain digestive issues. Do Oreos cause diarrhea?

We all know that high-fat, sugary foods are difficult to resist but apparently, this famous cookie’s compelling taste can be explained by science. So what makes Oreos so irresistible?

According to a study done by Connecticut College, Oreos can be just as addictive as morphine and cocaine! Moreover, this cookie stimulates the brain’s ‘pleasure center’ even more than drugs do. Therefore, eating Oreo cookies can actually make us happier than crack!

What Causes Diarrhea?

Do Oreos Cause Diarrhea? - 6 Reasons They Might! - Gut Advisor (1)

Diarrhea is a gut disturbance characterized by loose, watery stools more than three times a day accompanied by stomach cramps. It is often caused by a virus or bacteria that your body is trying to get rid of. Usually, diarrhea occurs for a day or two and then clears up without any long-term health issues.

However, eating certain foods can also bring about episodes of diarrhea. Some of these include spicy food, dairy products, and several types of vegetables.

Persistent diarrhea can put you at risk of dehydration and may cause electrolyte imbalance. In more serious cases, diarrhea can cause you to experience malabsorption, which leads to malnutrition.

The Ingredients Are To Blame

Do Oreos Cause Diarrhea? - 6 Reasons They Might! - Gut Advisor (2)

Have you experienced making a run for the toilet just a few moments after eating some Oreos? If you’re suspecting the cookies, you’re probably right!

When you suddenly experience digestive issues such as diarrhea or irregular bowel movement, Dr. Felice Schnoll-Sussman, a well-known gastroenterologist and director of the Jay Moynahan Center for Gastrointestinal Health in New York, advises recalling right away what you’ve been eating. Often, she says, you can be having an adverse natural reaction to some ingredients the food contains so better check the nutrition label.

6 Reasons Why Oreos Can Cause Diarrhea

Here are some ingredients of Oreos that may cause diarrhea in more sensitive individuals:

  1. Chocolate

As mentioned in a previous article, coffee causes diarrhea because it stimulates the digestive tract largely due to its caffeine content. One common source of caffeine is chocolate. Any chocolate-flavored product, such as Oreos’ delicious biscuit, contains caffeine as well. Other food and drinks that have caffeine are colas, hot cocoas, energy drinks, and black or green tea.

  1. Sugar

Ingesting foods with high sugar content can lead you to develop diarrhea. Sugars trigger the gut to produce water and electrolytes, both of which cause loose bowel movement.

Some common foods that contain added sugar are candies, cookies, cakes, pies, pastries, ice cream, and sweetened drinks like sodas, sports drinks, and juices.

  1. High Fructose Corn Syrup

Around 40% of people suffer from fructose malabsorption which is a condition similar to lactose intolerance. Both stem from the body’s inability to fully absorb sugars like fructose and lactose.

Fructose is a natural sugar that is mostly found in fruits and vegetables. Unfortunately, it can also be found in high fructose corn syrup which is one of the ingredients of Oreo cookies. It is also present in Graham crackers and one of the reasons why Graham crackers may cause diarrhea. Once this undigested sugar arrives in the colon, bacteria ferments it so that gas, bloating, diarrhea, and other gastrointestinal disturbances ensue.

Fructose malabsorption is a fairly common condition that can be caused by certain circ*mstances such as:

  • uneven levels of good and bad bacteria in the GI tract
  • preexisting gastrointestinal issues such as irritable bowel syndrome (IBS)
  • excessive intake of refined and processed foods

Most people with fructose malabsorption will only have mild cases, others will experience more discomfort such as diarrhea and abdominal pain when they consume too much fructose. As a matter of fact, studies show that 75% of people who take in more than 40 to 80 grams of fructose will experience diarrhea.

  1. Palm and/or Canola Oil

Aside from cooking, palm oil is also used in several household products such as ice cream, toothpaste, ready meals, make-up, and baked goods. Moreover, it increases the shelf life of products. Unfortunately, palm oil is often very heavily refined which makes it difficult to digest so that you may end up with diarrhea.

Canola oil is widely used for cooking and is considered one of the healthiest cooking oils because it’s high in unsaturated fat and low in saturated fat. However, some people experience stomach pains after ingesting canola oil. This can be because they are unable to digest fat, have undergone mold exposure, or are allergic to canola oil, of which one of the symptoms is diarrhea.

  1. Soy Lecithin

Soy lecithin is an ingredient commonly used in processed foods such as cereal, bread, pasta, meats, sauces, soy and milk alternatives, and can also be found in health supplements. Generally, soy lecithin is considered safe for most people. However, it can cause some side effects to others such as nausea, fullness, abdominal pain, and diarrhea.

  1. Wheat Flour

Wheat flour contains gluten, a type of protein that is commonly used in homemade and commercial baked products. Gluten is also an ingredient in flour that has rye, barley, triticale or spelt in it. It enables the dough to rise and form shapes and is responsible for the chewy texture of baked goods.

However, some people are gluten intolerant and unable to digest the substance properly. Common symptoms of gluten intolerance include bloating, diarrhea, constipation, and particularly smelly feces.

Oreos Can Make Your Poop Black

Do Oreos Cause Diarrhea? - 6 Reasons They Might! - Gut Advisor (3)

One possible drawback of eating Oreos is that they can make your stool turn black. Well, definitely a drawback if gazing at what you have just excreted can cause you to gasp in fright! This is because products made from dark chocolate, such as that pack of Oreos you’ve just consumed, can make you produce dark-colored stool. So next time you happen to pass black, watery poop, don’t panic because the culprit is probably just the Oreos.

White Creme Filling

There are two ways to eat an Oreo. One is to instantly bite into the three-layered cookie as a whole. The other is to twist the two chocolate biscuits apart so you can immediately get to the white filling.

But did you know that Oreos’ filling doesn’t contain cream, contrary to what one would expect? Since no dairy products are used in Oreo cookies, the FDA prohibited Nabisco to call their filling ‘cream’. They easily got around this dilemma by spelling it ‘creme’.

Although the lists of ingredients can be seen on the back of the package, there is no distinction between the contents of the cookie and those of the white center. Apparently, the filling is most likely made of palm or canola oil, sugar, soy lecithin, high fructose corn syrup, and artificial flavor –all of which can cause diarrhea on its own.

Oreos have been around for over a hundred years and don’t seem to show any signs of slowing down in their popularity. It seems that this famous snack will always be on most people’s grocery lists. However, if you ever find yourself prone to diarrhea and other gastric disturbances, better keep yourself far, far away from this delicious cookie confection!

Do Oreos Cause Diarrhea? - 6 Reasons They Might! - Gut Advisor (2024)


What happens when you eat too many Oreos? ›

Oreo cookies supply high amounts of energy to the body. The excess calories could accumulate as fat and, over time, lead to obesity, heart diseases, high blood pressure, and other diseases.

Why is my poop dark brown after eating Oreos? ›

Yes, due to the Oreo's dye and depending how many you eat, your poop will turn darker in color. This should be an alarm sign only if the color of your feces doesn't revert back to normal within a week after cutting off Oreo from your diet.

Why do I feel sick after eating Oreos? ›

It could be an allergy, it could also be an overload of rich & synthetic ingredients making you queasy. I get a similar reaction when I've eaten too much fried food at one sitting, it's not ingredients causing allergies, but overloaded oily fatty food.

What foods can cause loose stools? ›

The following can cause loose stools or make them worse.
  • Sugar. Sugars stimulate the gut to put out water and electrolytes, which loosen bowel movements. ...
  • Dairy foods. ...
  • FODMAPs. ...
  • Gluten. ...
  • Fried or fatty foods. ...
  • Spicy foods. ...
  • Caffeine. ...
  • Image: 5432action/Getty Images.
Apr 7, 2022

Are Oreos the most unhealthy cookie? ›

Are Oreos something to be avoided at all cost, or are they a safe occasional treat? Oreos are certainly not the healthiest cookies you could choose. They are made with high fructose corn syrup, vanillin (fake vanilla) and cheap oils. They are high in sugar, but low in fiber.

What happens if I eat Oreos everyday? ›

The Verdict

Oreo cookies have high amounts of sugar, fat, and calories. Therefore, it can cause severe health conditions like diabetes, obesity, and heart diseases. However, you can avoid the harmful effects by having it in moderation.

What does dark brown sloppy poo mean? ›

Dark brown stool can be caused by a variety of factors, including dehydration, constipation, IBS, or consuming dark-colored foods or iron-rich foods or supplements. However, it is important to note that dark brown stool can also be a sign of gastrointestinal bleeding, which may indicate a more serious issue.

Can Oreos change your poop color? ›

Eating Oreos can result in your poop being black, however it doesn't necessarily mean they were the cause. Due to their ingredients, specifically the food coloring, Oreos can cause your poop to turn black. The effects of food color on your feces can be seen as soon as the next day.

Should I be worried if my poop is dark brown? ›

All shades of brown and even green are considered normal. Only rarely does stool color indicate a potentially serious intestinal condition. Stool color is generally influenced by what you eat as well as by the amount of bile — a yellow-green fluid that digests fats — in your stool.

Are Oreos inflammatory? ›

Oreos do contain inflammatory fats (palm/canola oil), sugar AND high fructose corn syrup (pay attention as sugar can show up in your food in multiple ways and high fructose corn syrup has been linked to diabetes, obesity, Alzheimer's, etc.), soy lecithin (a food additive most likely from genetically modified soybeans), ...

Is it OK to eat 3 Oreos a day? ›

It depends. If you are otherwise healthy, not overweight, don't have high blood sugar, and are not eating tons of other crap, then you should be okay. 3 oreos has about 160 calories and 25 grams of carbs. There is really nothing nutritious about them, but only three cookies is not likely to cause you serious harm.

What are the 4 types of diarrhea? ›

Diarrhea can be classified into four types:
  • Osmotic diarrhea. Water absorption in the intestines depends on the proper absorption of solutes, which is hindered if there are too many solutes in the intestinal lumen, which leads to diarrhea. ...
  • Secretory diarrhea. ...
  • Inflammatory or infectious diarrhea. ...
  • Motility-related diarrhea.
Nov 30, 2022

How quickly can a food cause diarrhea? ›

How Soon Do Symptoms Start?
When Symptoms BeginSymptoms
30 minutes to 8 hoursNausea, vomiting, stomach cramps, diarrhea
Within 24 hoursWatery diarrhea, nausea, stomach cramps, vomiting, fever, chills
6 to 24 hoursDiarrhea, stomach cramps that last for less than 24 hours—vomiting and fever are not common
7 more rows

When I eat I immediately have diarrhea? ›

Diarrhea may happen after eating with many different conditions, including lactose intolerance, food poisoning, celiac disease, IBS, and more. A healthcare professional can help you find the cause of frequent diarrhea and recommend treatment.

How many Oreos are too many? ›

3 oreos has about 160 calories and 25 grams of carbs. There is really nothing nutritious about them, but only three cookies is not likely to cause you serious harm.

What is the unhealthiest Oreo? ›

Fudge Covered Oreo

Not a surprise, really, that a cookie coated in additional chocolate fudge is about the least healthy Oreo you can get, is it? This variety has the most saturated fat of any Oreo on the list.

How many Oreos should you eat at once? ›

The official serving size is 3. A calorie counter might well have only 2. If you are distributing them to children for a snack, 2 might be appropriate. I think 2 or 3 is a fine number to grace a bowl of ice cream or pudding.

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