You probably start your day with a cup of coffee, a beloved beverage for many of us, providing a much-needed energy boost to start the day.
But for some people, a cup of coffee can also bring on uncomfortable digestive issues, such as diarrhea. So, can coffee really cause diarrhea?
Let’s explore the possible link between the two.
How Coffee Affects the Digestive System
Coffee contains some compounds that can affect the digestive system. The most well-known of these is caffeine, a stimulant that can speed up the movement of food through the intestines.
This can cause a laxative effect, leading to diarrhea in some people.
Coffee also contains other compounds that can similarly affect the digestive system. For example, coffee beans contain a compound called kahweol, which has been shown to have laxative effects in animal studies.
Individual Variations in Response to Coffee
It’s important to note that not everyone will experience digestive issues after drinking coffee. Many people can enjoy coffee without any problems at all.
This is because individual variations in response to coffee can affect whether or not it causes diarrhea.
For example, some people may be more sensitive to the effects of caffeine and other compounds in coffee, leading to a greater likelihood of digestive issues. Others may have underlying digestive conditions, such as irritable bowel syndrome (IBS), that make them more likely to experience diarrhea after drinking coffee.
Caffeine and Laxative Effect
While caffeine is the main compound in coffee known to have a laxative effect, it is not the only one. As mentioned earlier, coffee beans contain a compound called kahweol, which has been shown to have laxative effects in animal studies.
In addition, coffee also contains a small compound called theophylline, similar to caffeine in structure and function. Theophylline has been shown to have a mild laxative effect in some people, although its role in causing diarrhea is not well understood.
It’s important to note that the effects of caffeine and other compounds in coffee can vary depending on the type of coffee being consumed. For example, espresso has a higher concentration of caffeine than regular brewed coffee, which may make it more likely to cause diarrhea in some people.
How to Enjoy Coffee without the Runs
If you love coffee but find that it gives you diarrhea, there are a few steps you can take to enjoy your daily cup without the uncomfortable side effects.

First, try reducing the amount of coffee you drink. This can help to minimize the effects of caffeine and other compounds on your digestive system.
Start by cutting back to one or two cups of coffee daily, and see if that makes a difference. If you still experience diarrhea, try reducing your intake even further.
You can also try switching to a different type of coffee. For example, decaf coffee contains much less caffeine than regular coffee, making it easier for the digestive system.
Similarly, switching to a coffee made with a different bean or roasting process may also help.
It’s also a good idea to pay attention to how you prepare your coffee. Adding cream or sugar can increase the likelihood of digestive issues, so try cutting back on these additives.
And be sure to drink plenty of water to stay hydrated, which can help to prevent diarrhea.
Conclusion
In conclusion, coffee can cause diarrhea in some people. However, individual variations in response to coffee and other factors, such as underlying digestive conditions, can play a role in whether or not it causes digestive issues.
You can still enjoy your daily coffee cup without the runs by making simple adjustments to your coffee habits.