Foodborne illness, often called food poisoning, occurs when people consume contaminated food or beverages. This contamination can be caused by bacteria, viruses, parasites, or chemical substances. Common symptoms include nausea, vomiting, diarrhea, and stomach cramps, which can vary in severity depending on the pathogen involved. Preventing foodborne illness involves proper food handling practices, such as washing hands, cooking food to safe temperatures, and storing food correctly. Organizations like the Centers for Disease Control and Prevention (CDC) provide guidelines to help reduce the risk of foodborne illnesses and ensure food safety for everyone.