What is food poisoning? it's an acute illness, usually sudden, caused by eating contaminated or poisonous food. The symptoms of gastrointestinal disorder are: 1. nausea - a queasy feeling as if you were close to vomit 2. sickness - vomiting 3. Pains within the bowl - gripping pains within the area of the stomach 4. Fever 5. Diarrhea The main causes of gastrointestinal disorder are: 1. Metals - lead pipes, copper pans 2. Viruses - which are smaller than bacteria, are normally found in water 3. Chemicals - Insecticides and weed-killers 4. Bacteria - the most typical 5. Poisonous plants - toadstools, red kidney beans (insufficiently cooked) Bacteria is that the commonest sort of gastrointestinal disorder then it's important that we all know more about them. Bacteria are tiny bugs that sleep in the air, in water, in soil, on and in people, in and on food. Some bacteria causes illness. they're called PATHOGENIC bacteria. Some bacteria cause food to rot ...