Narrow the title of your essay. Stay within the limit of 500 words:
1. Obesity: medical, political, economic and ethical aspects of the problem.
2. Foods causing obesity: corn, corn syrup, cereals, junk food; political and economic aspects of the problem.
3. Fast food: history, advantages and disadvantages, types of fast food, safe or harmful, producers and their concerns.
4. GM food: solution to global problems, multinationals’ profits, control of agriculture, threats to the environment and health, GM-free movements.
5. Nano food: another threat to food, health, environment; lack of control; alternatives; scientific research.