What is a common symptom of foodborne illness?

Nausea and vomiting are indeed two of the most common symptoms associated with foodborne illnesses. These symptoms occur as the body’s natural defense mechanism when it identifies harmful pathogens or toxins in ingested food. The body reacts by trying to expel the offending substance, leading to feelings of nausea and the act of vomiting. This response can help in preventing further absorption of the harmful agents.

In contrast, improved appetite, increased energy levels, and enhanced cognitive function do not typically align with the effects of foodborne illnesses. In fact, those experiencing foodborne illnesses often have reduced appetite and energy levels due to dehydration and the body's need to focus on recovery. These symptoms reflect the body's inflammatory response and the systemic effects of the illness, emphasizing why nausea and vomiting stand out as a key sign of foodborne disease.