Which of the following is a common symptom associated with foodborne illnesses?

Nausea is indeed a common symptom associated with foodborne illnesses. When food becomes contaminated with pathogens like bacteria, viruses, or parasites, the body often reacts to these toxins by inducing nausea. This response is part of the body's natural defense mechanism aimed at expelling harmful substances. Nausea can be accompanied by other symptoms such as vomiting, diarrhea, abdominal pain, and fever, which can help in identifying the presence of foodborne pathogens. Recognizing nausea as a significant symptom can aid individuals in understanding when they may need medical attention or to report a potential food safety issue.

Other symptoms, though they may arise from various health conditions, are not as directly associated with foodborne illnesses as nausea is. For example, headaches could result from dehydration or stress, fatigue may come from numerous non-foodborne related issues, and increased thirst can be indicative of several conditions unrelated to food safety or foodborne illnesses specifically.