Introduction:Besides its role in boosting alertness, for some people, coffee also acts as a “natural laxative.” From the widely discussed phenomenon of people "rushing to the bathroom" after drinking it, to the gastrointestinal reactions triggered by iced americano and black coffee, this involves multiple factors such as lactose intolerance, beverage temperature, and individual constitution. This article delves into how coffee affects intestinal function and offers practical advice to help you enjoy your daily coffee more scientifically.

For modern individuals, coffee is not just a stimulant but has become integrated into various life scenarios such as work, socializing, and exercise. However, some drinkers have a rather unique motivation for consuming coffee every day — to relieve constipation. In recent years, many well-known chain coffee brands including Luckin, Starbucks, M Stand, %Arabica, and Manner have received consumer feedback reporting noticeable gastrointestinal motility responses after drinking their beverages, with some even humorously referring to certain products as “masters of loosening the bowels.”

This phenomenon first gained attention when netizens shared their experiences of diarrhea or frequent trips to the bathroom after trying a seasonal new product. Subsequently, more people reported similar cases — whether it was milk-based lattes or black coffee, both could act as triggers. Some even stated that they weren’t pursuing coffee flavor at all, but simply using it as a “helper” for improving bowel movements.

But does this mean there are food safety concerns with coffee itself? In reality, most well-known brands, including Luckin — dubbed the “coffee cleaner” by netizens — have strict quality control and hygiene management systems, making their products generally safe. So why do some consumers still experience strong gastrointestinal reactions?

A common reason is related to lactose intolerance or milk protein allergies. Many latte-style coffees contain fresh milk or dairy products, such as the fresh cheese thick milk used in Luckin’s Cheese Latte, which may cause discomfort in people with such sensitivities, leading to diarrhea. Even if the coffee itself is harmless, the dairy components added to it might be the “culprit.”

Interestingly, some consumers report that even when drinking dairy-free options like iced americano or black coffee, they still feel the urge to go to the bathroom. For iced americano, a common speculation is that the low temperature stimulates the stomach rather than the direct effect of caffeine, especially for those with more sensitive digestive systems — cold drinks may directly cause discomfort. As for black coffee, studies show that its caffeine content can indeed promote intestinal motility. For certain “chosen ones,” a single cup of black coffee can achieve the effect of natural laxation.

However, not everyone can safely rely on coffee to address constipation. For those already suffering from gastric ulcers, irritable bowel syndrome, or other digestive system disorders, the stimulating nature of coffee may worsen symptoms or cause additional discomfort. Therefore, if you have long-term gastrointestinal issues, it is advisable to consult a physician or dietitian before deciding to include coffee in your daily diet.

In summary, coffee’s impact on the stomach and intestines varies from person to person and may involve multiple variables such as dairy ingredients, beverage temperature, individual constitution, and health status. Understanding your own reaction to coffee and choosing the appropriate type and method of consumption can help you balance alertness and gut health.

The above content is compiled by CoffeeHunters, a coffee news website.