Since food is a broad topic, you will need to think about areas or disciplines and how you can narrow down your topic. Some areas may include culture, business and industry, and health and nutrition. You may want to try some of the following terms and combinations of terms. When you search, write down terms that look interesting or are related to your topic:

More specific terms might include: "food habits", "food culture", "food preferences","food industry and trade", food and "social conditions", "food supply", food and folklore, food and history, food and religion....

Related terms might include: nutrition, malnutrition, diet, obesity, dining, "beef industry", vegetarians, gastronomy, "organic farming", famine, "sustainable agriculture"