Contaminated food refers to food that has been tainted by harmful substances, such as bacteria, viruses, parasites, or chemicals. These contaminants can cause foodborne illnesses, which may lead to symptoms like nausea, vomiting, diarrhea, and fever. Common sources of contamination include improper food handling, inadequate cooking, and cross-contamination between raw and cooked foods. Preventing food contamination involves practicing good hygiene, cooking food to safe temperatures, and storing food properly. It is essential to wash hands, utensils, and surfaces frequently to reduce the risk of contamination. Awareness of food safety practices can help protect individuals from illnesses caused by contaminated food.