커피를 마시면 왜 대변이 마려울까? [ENG/JPN SUB]
여러 통계 자료에 따르면 한국인은 하루에 한 잔 이상 커피를 마신다고 합니다. 근데 커피를 마셨을 때 변의(대변이 마려운 느낌)를 느껴보셨나요?…
Why does drinking coffee make you want to defecate?
Many of you might not be able to
relate to today's topic.
At first, I took this question as a joke.
But I've received this same question
a number of times.
How is coffee related to defecation
that drinking coffee makes many people
want to use the restroom?
Surprisingly, the correlation between
coffee and wanting to defecate
was studied in quite a few articles.
And most of them concluded
that drinking coffee could
(* Desire of Defecation)
stimulate the urge to urinate or defecate.
In other words, today's topic is based on real evidence.
Then how do we explain why
some can't relate to this sensation?
A medical journal on gastroenterology
and hepatology called 'Gut'
published an article in 1990
which could serve as a reference.
In this article, a small experiment was conducted
with healthy subjects aged from 17 to 27
on less than 100 people.
The experiment was simple.
They checked to see if the subject felt
the urge to defecate after drinking coffee
and 29% of the subjects replied
they felt the urge to use the restroom.
So 3 out of 10 people have experience
with today's topic
while the rest do not,
so this topic is relatable to some and not to others.
Then what causes this sensation?
When asked to say what coffee is made of,
most say caffeine.
According to the article,
14 subjects were asked to drink
(*Decaf coffee: Coffee with less caffeine)
200 mL of coffee, decaf coffee, and water
served at 45℃ at 11 a.m.
If caffeine was the cause,
then drinking the decaf coffee
should not trigger the sensation.
The results showed that the effect
varied among subjects,
but drinking coffee felt 60% more
stimulating than water
and 23% more stimulating than decaf coffee.
This means drinking decaf coffee
also stimulates the urge to defecate.
This urge occurred within 4 minutes
after drinking the coffee
and lasted for about 30 minutes.
Coffee contains so many various ingredients,
so it's difficult to find a clear cause.
But gastrin and cholecystokinin
are considered to stimulate this urge.
Gastrin is a hormone released from
the end of the stomach
that stimulates gastric and intestinal motility.
When gastrin secretion is stimulated,
it speeds up the digestive process,
stimulating the urge to defecate.
Coffee stimulating gastrin secretion
is shown in a lot of research,
so it's widely regarded as being true.
As for the hormone secreted from the small intestines,
the digestion of fat and protein
and is assumed to play a role in
causing the urge to defecate.
In 2015, the American Chemical Society
also added chlorogenic acid
as an ingredient that causes
the urge to have bowel movements.
High quantities of chlorogenic acid
can be found in coffee,
and is a type of polyphenolic compound.
It increases the concentration
and production of stomach acid,
so it also accelerates digestion
and could stimulate the urge.
And since regular coffee and decaf coffee
both contain high quantities of chlorogenic acid,
the reason why decaf coffee
sometimes causes this urge can be explained.
But this doesn't mean drinking
coffee after a meal aids digestion.
We need a certain amount of time to digest
but when we drink coffee,
the food in the stomach could
go straight to the small intestines
and cause the food to not be digested properly
which could lead to irritation and inflammation.
If you feel these sensations often
after you drink your coffee,
there is a need to be cautious.
Did this satisfy your curiosity?
Trivial things you were curious about but couldn't ask,
that's it for today's Samulgoongi
Translation: Unified Translation