Food poisoning occurs when food is contaminated with germs, or the toxins they produce, and is a leading cause of vomiting, diarrhoea and stomach cramps. According to the Food Standards Agency, about 12% of people suffer a bout of suspected food poisoning each year.
Food poisoning from bacteria can occur in different ways. Some types of bacteria release poisons called toxins. the other bacteria multiply in the body first before causing symptoms.