The food system has a huge impact on many aspects of life. It affects economics, biological diversity, political issues, and sustainability. A number of factors determine the foods we eat, including our culture and the way we were raised.
Foods come from plants, animals, and fungal sources. They are the main source of energy and nourishment for animals and humans. Humans need a variety of nutrients to sustain growth, repair tissues, and regulate vital processes.
Dietary requirements vary by age, gender, and activity level. People should eat a variety of foods to get all of the nutrients they need.
Protein-rich foods are meats, eggs, and dairy products. Vegetables, legumes, and starchy vegetables are other foods that are important for people. These foods are a good source of vitamins, minerals, and fiber.
Fats provide twice as much energy as carbohydrates. Meats, poultry, and fish are all rich in fat. Many people consume a high-fat diet.
Meat, poultry, and fish can be dried or salted. People also preserve fish by canning or freezing. Fish can be eaten raw or cooked.
Vegetables have a wide range of colors and flavors. Green peas, red and orange vegetables, and lettuce are just a few examples. Dairy products supply protein and carbohydrates.
Grain products include cereal grains. Grains are also used for making pasta, popcorn, and tortillas. Some grain products have a longer shelf life than others.
Depending on the region of the world you live in, the foods you eat may be different from the foods you see in other countries. For example, people living in warm, wet lowlands rely on crops that retain water.