Somebody who doesn't eat meat is called a vegetarian. Somebody who doesn't eat any animal products at all is called a vegan. Some people refuse to eat meat or other animal products for health reasons because they want to remain fit and healthy. Some people refuse to eat meat for moral reasons because they believe it is wrong to eat animals. Some people refuse to eat meat because of their religion. A lot of people are allergic to certain foods, so they cannot eat them. If a person has an allergy to a food and accidentally eats them, she will become ill. In very serious cases, a person with a serious allergy may suffer from anaphylactic shock, which causes shock, breathing difficulties and sometimes death. Some people are intolerant to certain foods, so they try to avoid them as their bodies have difficulty processing them. In European Union countries, all restaurant kitchens are required to have a food hygiene certificate to show that they can handle and prepare food safely.