Most likely you misunderstood something.
Diarrhea is called loose stools more than three times a day. And the cause of diarrhea is usually infectious. If you do not live in Africa, viruses are more likely to be the cause. Nothing can be done with them.
It's not the fun part yet. It will be more fun further.
Not every diarrhea that you think is diarrhea is actually diarrhea. Just like not every constipation you think is constipation will actually be constipation.
I explain. Anyone can have an episode of loose stools. This is normal. This can happen from regular food.
If you eat a double or triple serving of the same food you usually eat, diarrhea can occur. Most likely it will be a one-time loose stool, which will not recur, and with which nothing needs to be done.
Vegetables and fruits
Plant foods, including unripe fruits, contain many interesting sugars that we can't digest. They act as a laxative.
Fructose
Even everyone's favorite fructose in processed foods, fruits, or honey can cause diarrhea.
Half of the people can't digest more than 25 grams of fructose and run to the toilet. Approximately 75% of people are unable to digest 40 - 80 grams of fructose. They will have diarrhea too.
Have you presented? A couple of tablespoons of honey can lead you to believe that you are seriously ill.
Fat
It's even more interesting here. If you haven't eaten for 12 hours, your gallbladder will be full of bile. If at the same time you eat something fat, then all the accumulated bile will pour out into the intestines, and there will be diarrhea. Because bile acts as a laxative.
And another option. If you just overeat fatty foods, then this fat will not be absorbed, but will fly into the large intestine.
Usually, the colon draws water from the contents of the intestine. But if a lot of fat arrives in the colon, then water is not absorbed, and loose stools are obtained.
Got it? Where is the infection?
