What is a common symptom of foodborne illness?

Nausea and vomiting are common symptoms of foodborne illness, primarily because they are the body's way of expelling harmful substances that have been ingested. When contaminated food or water is consumed, the body detects the presence of pathogens—such as bacteria, viruses, or toxins—and responds by activating the digestive system's protective mechanisms. These symptoms can occur quickly after ingestion, serving as an immediate reaction to the irritants or infections introduced into the body. Understanding this characteristic is crucial for identifying and managing foodborne illnesses effectively, as well as for implementing preventive measures in food handling and preparation.