How long does it take to have a gastrointestinal reaction after eating bad food?

The time of gastrointestinal reaction after eating bad food varies from person to person, and the specific situation is analyzed.

1. Bacterial infection

Eating food contaminated by bacteria may lead to acute gastroenteritis. Bacteria multiply in the intestine and release toxins, causing diarrhea, abdominal pain and other symptoms, usually within a few hours to a few days.

2. Virus infection

Eating food infected by virus may lead to gastrointestinal cold. Gastrointestinal reaction occurs within a few days to two weeks, manifested as nausea, diarrhea, vomiting, abdominal pain, etc.

3. Food poisoning

If eating bad food, it is easy to cause food poisoning, which can occur within a few hours to several days. Symptoms include diarrhea, vomiting, abdominal pain, headache, fever, etc.