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Does Coffee Make You Poop

If you’ve observed that the morning cup of coffee is often immediately followed by a trip to the bathroom, you’re not all alone. There are several causes for this, depending on the effects of coffee on the gut hormones and colon health to the times you consume the beverage. Many people who drink coffee pee, which is the beginning of a colon movement. This occurs even when drinking coffee that is decaf coffee.1

Urge to Poop Urge to Poop

Even though coffee can’t produce the same effect on the bowels for everyone, studies show that it stimulates the desire to vomit in about three-quarters of the population. It also generally affects women more than men.2

The effect could occur quickly. Studies have shown that coffee consumption can trigger the contraction of your colon’s muscles in just four minutes. This could trigger the desire to poop.2

Caffeinated beverages have a more powerful influence on the colon’s muscle activity than decaffeinated beverages. A previous study showed the consumption of caffeinated coffee has an increase of 23% in the contractions in the colon than decaf coffee. That means drinking coffee with caffeinated caffeine could cause a greater need to pee over decaf.1

Alongside its capacity to boost muscle activity within the colon. There are several other ways coffee can trigger the desire to vomit in certain people.

The effects of coffee on hormones in the gut

Coffee can trigger the production of various hormones, such as gastrin, the cholecystokinin (CCK), that play a role in an action known as the gastrocolic reaction, which triggers contractions in the digestive tract and pushes poop towards the rectum to facilitate removal.3 The result is that coffee could stimulate movements in the intestine, increasing the desire to go pee.

Although it is clear that coffee impacts the gut’s hormones, further studies are needed to comprehend how coffee’s components influence digestion.

Morning Coffee

Research from earlier times has shown that coffee’s stimulant effect on the digestive tract appears to be most effective in the early morning. It could be because while you’re sleeping, the body’s process to empty the stomach is more sluggish than when you’re awake. The contraction of the colon is also less while you’re sleeping.4

When you get up and move around, the colon will as well. Coffee in the morning increases the rate of digestion and can increase your desire to pee stronger.5

What causes coffee to make you vomit?

The caffeine-based jolt from coffee will surely wake your spirits in the morning (or any other time of your day). However, that roar of engines doesn’t just happen in your brain. It can also affect your bowels, according to Dr Lee.

Researchers discovered that 29 per cent of coffee drinkers desire to vomit following a cup of coffee. It can happen quite quickly as well. (In less than 4 minutes!)

This isn’t just randomness. Let’s see what’s at play.

Coffee increases colon constriction.

The act of pooping is a laborious one, and it demands muscles. The muscles within your bowels contract to help move the faeces along the twists and turns of the colon until they can end. (Medical language: Peristalsis is the name of the wave-like movement in your muscles.)

The acids in coffee are known to increase gastrin levels, a hormone that triggers the involuntary muscles inside your stomach. This helps move your bowels. It happens in both the regular and decaffeinated varieties of coffee.

The evidence also suggests that caffeine increases the production of cholecystokinin, a different hormone that plays an important function in digestion.

The bottom of the line? Coffee is a great way to speed up your belt of poop. It’s an effective natural laxative.

“The gastro release can be stimulated by coffee in itself,” says Dr Lee. “It helps to move things along.”

Caffeine and your colon

However, as we’ve mentioned earlier that decaf coffee aids in moving things along because of the acidity. “Decaf does not have the same potency as its counterpart caffeinated, however, it does have the ability to lax,” notes Dr Lee.

Therefore, it’s not simply caffeine that triggers second. The issue is how caffeine works in conjunction with the coffee’s natural acids to boost the speed of things. (That can also explain why caffeine-laced energy drinks do not cause people to go to the bathroom.)

Timing concerns

Many coffee drinkers will reach for their coffee early in the morning. This is a great thing for toilet timetables.

“Your digestive tract is vulnerable and susceptible to movements during the early hours of the day,” observes Dr Lee. “Drinking an iced, relaxing cup of coffee taps into your stomach reflex and speeds up the transit process.”

Coffee is a great way to boost hormones.

It has also been proven to increase hormones, which aid in pushing food items through the digestive tract.

It can, for instance, boost levels of the hormone gastrin. Like caffeine, gastrin can activate your colon (2Trusted Source).

A study showed that regular or decaf coffee consumption increased gastrin levels in the range of 2.3 or 1.7 times each, compared with water consumption (12Trusted Source).

Additionally, coffee may increase levels of the hormone that helps digest food, Cholecystokinin (CCK) (13Trusted Source).

The hormone may not just boost the passage of food particles through the colon; it’s also connected to the gastrocolic reflex that increases the activity of the colon (14Trusted Source).

What happens to your digestive tract and body?

More than 1000 diverse substances are present that are found in coffee. We aren’t able to comprehend the full range of these substances. However, we’re getting more about the effects of coffee on our bodies. What is the role of coffee in the digestion system?

The lining in your stomach produces a hormone known as gastrin. Coffee signals the stomach that it is time to release gastrin. It triggers a series of digestive contractions known as peristalsis. Peristalsis can move liquids and food through your intestinal tract. Sometimes, it can lead to an emergency toilet visit in less than a minute.

Decaf and caffeinated coffees both trigger your stomach to release gastrin. This effect is lower in decaf coffees. However, the product is there. The acids and caffeine in coffee can affect different parts of your digestive system, and it’s possible that additional components in coffee impact digestive and bowel movements in ways we do not fully comprehend.

How come the cup of coffee you have in the morning causes stool movements?

The gastrocolic reflex comprises nerves, muscles, and hormones that transfer liquids and solids through the intestinal tract. If you drink or eat, this reflex aids in helping your body to eliminate the things it does not need.

Numerous factors influence the reflex. Generally speaking, people do not need to go to the toilet each time they consume food or drink. However, the reflex for gastrocolic is more active during the early morning. It is why a morning coffee drink will more likely make your bowels poop than when you drink it at other times during the day.

Do the coffee’s caffeine levels make you vomit?

The body is stimulated by caffeine in numerous ways. In the past, caffeine was believed to be the culprit in producing the intestinal tract. Some studies indicate that there’s more involved other than caffeine.

The study revealed that caffeine can relax the anal sphincter. This area of our body holds stool inside or allows it out. It makes it much easier to go to the bathroom. A different study found that the muscles of the large intestine contract greater with coffee caffeinated over decaf.

Decaf coffee affected muscle contractions throughout the research. Caffeine causes some difference, but this is likely not the entire picture.

Different types of beverages affect your body differently.

The caffeine in coffee can cause you to need to pee. However, the ingredients you mix into coffee could alter your bowel motions. In particular, dairy products such as milk and cream may cause constipation and loose stool for those with lactose intolerance.

There could be some minor variations in the number of acids and caffeine present in various coffee types, such as dark roast, light roast and cold coffee. There’s not enough difference between the three to trigger a change in bowel movement for most people. However, some people are susceptible to minor diet adjustments, and it is important to know your body’s reaction to various types of coffee.


If you’re experiencing a rush to go to the bathroom after drinking coffee, you might have wondered what is the cause. Most people think that the colon activity after coffee is due to excessive caffeine, based on how coffee beans are prepared.

It’s surprising to learn that studies have revealed that caffeine may cause constriction of the colon, but it’s not the sole reason.

If the coffee you drink stimulates your bowels, it’s more than only experiencing the effect of caffeine. The caffeine in coffee can cause you to vomit regardless of the levels of caffeine. Decaffeinated tea can cause the same results for some individuals. It could be because caffeine increases gastrin levels, but caffeine alone doesn’t.

While coffee can stimulate the bowel, it’s not recommended as the best laxative for relieving constipation. A high dose of caffeine could cause dehydration, making constipation even more difficult. Drink a glass of water if you’re experiencing a slight back in the morning.

Both decaf and caffeinated coffee are awash with compounds; however, none of them has been conclusively connected to the desire to vomit. Though some have suggested that compounds like exorphins could play a role in these effects, science has yet to prove something.

Coffee is why people poop, and no energy drinks? The coffee, not the energy drinks, causes you to vomit because the caffeine present in the beverages isn’t what is causing you to get up. Coffee compounds stimulate your digestive system in a variety of ways. This gives you the urge to urinate.

Are coffee diuretics or a laxative? Coffee may be diuretic, as well as a laxative, for individuals. The caffeine in regular coffee is present, which acts as a diuretic. If you experience the need to pee following a cup of coffee, it can also act as a mild laxative.

It’s not solely responsible for your early morning visit to the toilet. Some other factors that could be contributing to your blitz in the bathroom are:

  • Hormonal changes
  • Creamer or milk
  • Warmth
  • Acidity
  • Certain health conditions
  • Artificial sweeteners

How Fast Can Coffee Cause You to Poop?

If you consume any beverage, it doesn’t matter if it’s water or coffee. It takes only about a minute to get the liquid through your oesophagus and then into the stomach, according to Doctor Dr Schnoll-Sussman. The abdomen is typically empty of its contents within 30 minutes. However, with coffee in particular, the possibility is that you will begin to feel constricted colon within a couple of minutes, and you may feel the need to have bowel movements in 30 minutes, according to her explanation.

A study, though tiny in scope, supports that up: Most of those who consumed non-sweetened black coffee reported greater rectosigmoid mobility (muscle contractions that occur in the final section of the colon sigmoid and the rectum’s start) in just four minutes following having a cup of regular or decaf coffee. This rise lasted for at least an hour. In contrast to the study, none experienced an increase in motility following hot or cold water.

People who feel compelled to pee after drinking coffee?

Though anyone could have a poop-induced experience from drinking coffee, certain individuals are more susceptible to this side effect. In particular, those with IBS tend to have a higher stomach reflex to gastrocolic, as per the doctor. Cohen, and, all in all, they could have a strong desire to go to the bathroom after eating or drinking, as per research conducted through the National Center for Biotechnology Information. Dr Cohen explains that coffee can cause an increase in the desire to use the bathroom within minutes of drinking an iced cup of Joe in those with these conditions. Similar to those with poor or untreated celiac disease (some sufferers may develop IBS symptoms) or Crohn’s Disease (a chronic inflammatory disorder of the digestive tract) and ulcerative colitis (another chronic inflammatory condition which affects just the rectum and colon) could be more susceptible to the gut-related effects of coffee, according to the doctor. Cohen.

According to the doctor, individuals who are on an intermittent fasting regimen could have a higher chance of experiencing the effects of coffee’s GI impacts. Schnoll-Sussman. Because they eat in a limited amount of time and eat only a small portion of what they might be sitting within their bodies for hours in a row, since “they’re not eating in the stomach, stimulating the bowel and supplying the intestinal tract with fibre all during the day,” she elaborates. So drinking coffee following the absence of food for around 16 hours may “rev the system” and trigger the body to experience an intestinal movement, according to her. (FTR This phenomenon still needs to be studied. The researcher Dr Schnoll-Sussman explains that the concept is just a speculation.)

A Quick Review

There are many reasons why coffee causes you to vomit. Coffee contains compounds that cause poop, including caffeine, coffee’s effects on specific hormones, and adding cream to coffee and sugar substitutes could be involved.

If you find that your coffee’s poo is difficult for you, try experimenting with the things you add to your coffee, the amount you drink and how often you drink your coffee to find out whether it impacts the desire to go.

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