Is black coffee good for a cough and cold, and how does it affect digestion?
Coffee can trigger bowel movements for some drinkers, and the effect is not limited to one brand. Luckin's new Christmas product was jokingly called a diarrhea trigger by netizens, and similar feedback has appeared for drinks from Starbucks, Mstand, %Arabica, and Manner. Possible causes include food safety issues, lactose intolerance, and the stimulation of iced drinks.
Whether black coffee is good for a cough is a separate question from its effect on the gut. The article examines the phenomenon from several angles so daily drinkers can judge their own cup more rationally. Coffee is already part of the daily rhythm for alertness, socializing, and fitness, and for a small group the purpose is relieving constipation. Delayed reactions, such as drinking at noon and feeling the effect near midnight, are also reported.
For contemporary young people, coffee has long been integrated into the daily rhythm—whether for alertness, socializing, or fitness, everyone has their own reasons. However, a certain group of people drink coffee every day for a rather special purpose: to relieve constipation. From Luckin's new products being jokingly dubbed by netizens as the "diarrhea trigger," to similar feedback frequently received for drinks from brands like Starbucks, Mstand, %Arabica, and Manner, the relationship between coffee and bowel movements has sparked widespread discussion. Is this behind it a food safety issue, or is it individual differences such as lactose intolerance or the stimulation from iced drinks? This article will analyze this phenomenon from multiple angles to help coffee lovers view their daily cup more rationally.
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For contemporary young people, "one Americano, a day with no troubles"—a daily cup of coffee has already become part of everyday life. Office workers down a cup of coffee and stay clear-headed from morning till night; trendsetters hold a cup of coffee and snap high-end photos in no time; fitness enthusiasts drink a cup of coffee and their metabolism gets a boost.
It can be said that every coffee drinker has their own reasons—whether because they enjoy the taste, or to keep their mind clear, and so on. But for a small number of people, the purpose of a daily cup of coffee is nothing else but to solve their constipation problem.
Recently, Luckin launched a new Christmas product, and netizens who went to try it gave their own reasons for recommending it, one of which was "diarrhea trigger."
And this is not the first time Luckin's new products have received similar reviews. For previously launched items like Cheese Latte and Mulled Wine Americano, netizens who tried them said things like "one cup down and my stomach's inventory was cleared out," "drank half a cup and cleared out two days' worth of stock," "drank it at noon, and by midnight everything was smooth."
Some netizens even admitted that they don't know how to appreciate coffee and can't tell good from bad; for them, the daily cup of coffee merely serves the function of a suppository.
But is it only Luckin's drinks that receive such reviews? Not at all.
On social platforms, Starbucks' Red Fuji Latte, Mstand's Orange Milk Candy Latte, %Arabica's Spanish Latte, Manner's Nut Cookie Latte, and others have all been reported by a small number of consumers as requiring a trip to the restroom after drinking. Some of these netizens said that after drinking it felt like taking laxatives, and once they entered the restroom, it would take a long while before they could come out.
Puzzled netizens might ask whether these brand coffees more or less have food safety issues, which would explain this "diarrhea after drinking" feedback. Actually, that's not the case. For example, Luckin, which went viral as the "coffee cleaner," has extremely strict food safety controls, and most coffee brands also have a rigorous set of food safety standards. As consumers, we can all choose our favorite coffee with peace of mind.
It's just that for people who are lactose intolerant or allergic to milk protein, milk-containing lattes and certain creative coffees with dairy products may not suit their stomachs. For example, the thick cheese milk added to Luckin's Cheese Latte is precisely the "culprit" that sends these consumers running to the restroom after drinking.
However, a small number of people say that they also need to go to the restroom after drinking iced Americanos or black coffee.
The former may be caused by an individual's stomach being unable to withstand the shock of a cold drink, and may have little to do with whether coffee is consumed. As for the latter, scientific research shows that coffee can promote gastrointestinal motility to a certain extent, so some "chosen ones" can also have smooth bowels and a good mood after a cup of black coffee.

Although for some people deeply troubled by constipation, a cup of coffee can indeed solve a physiological problem, if you suffer from gastrointestinal issues, please choose this "constipation relief tool" with caution—don't cause other bodily problems just to solve constipation~
Image source: Internet
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The above content is compiled by CoffeeHunters, a coffee news website.