Diarrhea from Coffee: Why It Happens and How to Fix It?

Millions of people around the world consume coffee every day. It’s a popular beverage because it tastes good and has caffeine, which gives you energy. But for some people, coffee can also cause diarrhea. Why is that?

In this article we will be answering you about all your burning questions related to diarrhea linked with coffee. We will also share some of the prominent signs for you to track down your coffee intake to prevent any welcoming situations.

Why Coffee Causes Diarrhea?

The caffeine in coffee is a stimulant that speeds up the movement of food and waste through your intestines. If you’re sensitive to caffeine, drinking coffee can trigger an episode of diarrhea.

If you have diarrhea after drinking coffee, it’s best to cut back on the amount of coffee you drink or switch to decaf. You might also want to avoid coffee for a few days to see if your condition improves.

Some people also find that they have diarrhea after drinking coffee because of the acidic nature of the beverage. If this is the case, you might want to try switching to a different type of coffee or brewing your coffee with less acidity.

What are the Symptoms of Diarrhea:

People who are sensitive to caffeine may experience diarrhea after drinking just a single cup of coffee. Other symptoms of diarrhea can include cramping, abdominal pain, and the sudden urge to have a bowel movement. If you experience any of these symptoms, this is your wake up call, you must consume less caffeine and see a doctor.

Diarrhea can be caused by various things, including bacteria, viruses, and parasites. It can also be a side effect of certain medications. If you have diarrhea, it’s important to stay hydrated by drinking plenty of fluids. It would help to avoid any tea or caffeine intake, as dehydration can worsen.

Too much caffeine will only make the condition worse. You might first caffeine withdrawal symptoms but over time your body will feel just fine. Most people don’t cut off their dairy products either and that can also contribute acute diarrhea if they are lactose intolerant.

If you have diarrhea that lasts for more than a few days or if you have severe symptoms, it’s important to see your doctor. Diarrhea can lead to dehydration, which can be dangerous. Your doctor can determine the cause of your diarrhea and recommend the best treatment.

Reasons Why Coffee Gives Diarrhea:

Diarrhea can happen for many reasons, and we have enlisted some of them or you to understand why and when it happens and how you can avoid it without developing a serious issue.

1. Drinking Coffee On An Empty Stomach:

If you’re sensitive to caffeine, drinking coffee can trigger an episode of diarrhea. If you’re not sensitive to caffeine, drinking coffee on an empty stomach can still cause diarrhea.

The caffeine in coffee is a stimulant that speeds up the movement of food and waste through your intestines. This happens because coffee has a strong impression on intestinal muscles, especially the small intestine.

When you drink coffee on an empty stomach, the caffeine is absorbed more quickly and can upset the stomach. To prevent your digestive system from such issues, try to avoid drinking caffeine products and prefer decaffeinated coffee.

2. Drinking So Much Coffee:

If you drink too much coffee, it can easily disturb your bowel movements. Coffee stimulates our digestive systems and can cause stomach discomfort within no time.

Caffeine is a stimulant; too much of it can cause your intestines to contract and move food and waste through your system too quickly. Coffee activates irritable bowel syndrome as well if consumed frequently.

Another issue that can happen to your body if you are not careful enough is developing a gastrocolic reflex, which disturbs your gastrointestinal tract and triggers high stomach acid levels, directly triggering the production of too much gastric acid.

3. Eating Too Much Coffee:

If you eat coffee beans, you might get prone to producing more bile. Coffee beans and other brewed beverages like espresso can speed up peristalsis or muscle contraction through the digestive tract.

The caffeine in coffee is a stimulant that speeds up the movement of food and waste through your intestines. When you eat coffee beans, the caffeine is absorbed more slowly than when you consume coffee, but it can still cause diarrhea.

Try avoiding eating dark roast coffee beans first thing when you wake up in the morning. Your Digestive system will surely thank you for this.

4. Coffee Is Too Strong:

If your coffee is too strong, it can irritate the stomach lining. Richer coffees, such as french roast, can cause stomach churn, and their chemical makeup can hurt your health. If you love coffee, trim the intake to a few cups monthly.

The caffeine in coffee is a stimulant that speeds up the movement of food and waste through your intestines.

5. You’re Allergic to Coffee:

You can get a hyper laxative effect if you’re allergic to coffee. The more you avoid coffee, the more you will be able to prevent yourself from any allergies and laxative effects that can harm your stomach.

Coffee contains chemicals that can cause an allergic reaction in some people. This is common in people that have lactose intolerance. When you’re allergic to coffee, your body reacts to the chemicals by producing histamines.

Histamines cause the muscles in your intestines to contract and produce gastric acid. It can also cause acid reflux in many people, leading to diarrhea.

6. Your Stomach Is Sensitive To Coffee Acids:

If your stomach is sensitive to coffee acids, you should drink such as cold brew and flat white. On top of these, you should also avoid adding artificial sweeteners too. Artificial sweeteners can cause bloating, which can turn into diarrhea over time.

Less caffeine means less laxative effect and fewer digestive issues. You can also avoid an active sympathetic nervous system and resist any alkaline substance and stomach stretches.

How Dangerous Can It Be to Drink Too Much Coffee?

Coffee is one of the most popular beverages globally, enjoyed by millions of people every day. But for some people, coffee can cause problems.

If you consume coffee regularly, you may be at risk of developing caffeine intolerance. Caffeine intolerance can lead to some uncomfortable conditions and patient will then have to take a pro motility agent.

Talk to your doctor if you have any concerns about your coffee drinking. They can help you determine if coffee is the cause of your diarrhea and recommend other drinks that may be safer for you to consume.

How To Avoid Getting Diarrhea Because Of Coffee?

If you’re sensitive to caffeine, consuming coffee can trigger an episode of diarrhea. If you’re worried about getting diarrhea from coffee, try these tips:

Choose decaf coffee instead of regular coffee:

Decaf coffee doesn’t have as much caffeine as regular coffee, so it’s less likely to cause diarrhea. Coffee makes your stomach hurts and decaf beverages will help you restore a healthy stomach cycle.

Try coffee with lower caffeine content:

Some coffee brands offer coffee with lower caffeine content

Consume coffee in moderation:

If you consume plain coffee, limit yourself to one or two cups daily.

Avoid other sources of caffeine:

If you’re sensitive to caffeine, avoid other sources of caffeine, such as tea, soda, and energy drinks.

When you consume coffee, have plenty of other fluids, such as water:

This will help keep you hydrated and reduce the risk of dehydration and worsening diarrhea.

Eat before you consume coffee:

Eating food before you consume coffee can help slow down the absorption of caffeine and minimize the risk of diarrhea.

Avoid coffee if you’re already feeling sick:

If you’re already suffering from diarrhea or another gastrointestinal problem, avoid coffee until you feel better.


Although coffee makes stomach hurt and cause diarrhea in some people, there are ways to minimize the risk. By following these tips, you can enjoy your morning cup of coffee without worrying about getting diarrhea.

Mian Mohsin (MohsinZox)

About Author:

I'm Mian Mohsin the founder of the DeesCoffee. Here, I share step-by-step guides and explore different coffee products from my personal experience. Learn more...