Which of the following is a common symptom of foodborne illness?

Nausea is a common symptom of foodborne illness because it often occurs as the body's reaction to harmful pathogens or toxins present in contaminated food. When a person ingests unsafe food, their digestive system can become irritated, leading to feelings of queasiness and the urge to vomit. This response is part of the body's defense mechanism to rid itself of harmful substances. Nausea can manifest quickly, sometimes within hours of consuming contaminated food, and is commonly reported by those who experience foodborne pathogens such as bacteria, viruses, or parasites.

While muscle cramps, headaches, and fatigue can also be associated with foodborne illnesses, they are less specific to food contamination and can result from numerous other conditions. Symptoms like nausea provide clearer insight into gastrointestinal disturbances that often accompany foodborne pathogens.