Food refers to the essential nutrients consumed by living organisms, such as animals and plants, for their growth and maintenance. These include carbohydrates, protein, fat, and fiber.
The food system impacts biological diversity, access, and sustainability, as well as economics and politics. It also has an effect on human health and wellness.
Food is the main source of energy for animals and humans. However, a balanced diet is necessary for a healthy body. A variety of foods is the best way to ensure you receive all of the vitamins, minerals, and other nutrients you need.
Some of the most common foods are fruits, vegetables, cereal grains, and dairy products. Meat is a rich source of protein and fat.
Dietary fibre is found in many plant foods. It helps maintain digestive function, reduces cholesterol levels, and prevents stomach problems. Proteins build muscles, strengthen bones, and promote growth.
Fats are used as an energy source. They provide twice as much energy as carbohydrates. You can eat fats regularly as a healthy diet.
Food processing is one of the largest manufacturing industries in the U.S. There are thousands of food processors. This includes producers, canners, food manufacturers, and other food and beverage companies.
Many people in developed countries rely on processed and ready-to-eat foods. They consume diets that are too high in salt and sugar. Also, the diets of some people are lacking in fruits.
The globalization of trade has made more types of food available. Improvements in transportation and communications have also contributed to better distribution.