(also food borne disease) is any illness resulting from the consumption of food. Food borne illness is commonly called food poisoning, even though the physiological effects of food borne illness are not always caused by poisons (toxins). True food poisoning occurs when a person ingests a contaminating chemical or a natural toxin, while most cases of food borne illness are caused by a variety of food borne pathenogenic bacteria, viruses, prions or parasites that contaminate food.