Genetically modified (GM) food is produced by changing the DNA of plants or animals. Some people worry about the long‑term effects. Organic food is natural food grown without pesticides. Eating out is becoming more popular, and TV chefs are very successful. Supermarkets now offer a wider choice of international food. British farmers had to kill thousands of animals because of diseases like mad cow disease. Overfishing has reduced fish supplies. 'Health foods' called nutraceuticals claim to protect your health, but the industry is not well regulated.