Food is any material eaten to provide nutrition to the organisms. It may be in the form of fruits, vegetables, grains, seeds, roots, and stems, or even in the form of animal products, like meat, milk, eggs, and other dairy products. In modern industrial and agricultural processes, food is usually of animal, plant or fungal origin and has necessary nutrients, including vitamins, carbohydrates, proteins, minerals, or hormones. The food we eat is categorized into several groups: animal food, plant food, and food for human consumption.
Animal food refers to any kind of food that is consumed by living beings. It could be fishes, meats, milk, eggs, and other dairy products; plants include fruits, vegetables, legumes, and nuts; and other food that is consumed by large animals, such as wild-game. Vegetable and fruit food refer to any kind of food that is eaten by herbivores or carnivores and that can also be consumed by fungi and bacteria. Meat and other non-animal foods are calling food for human consumption. Fruits, vegetables, legumes, nuts, and other grains are included in the main food groups. A mixture of meat and other animal or plant food is known as food for example milk, cheese, eggs, poultry, fish, beans, etc., while a mixture of fruits, vegetables, nuts, legumes, and grains forms the basic food group.
There are several types of food; some are complex, others are simple, some contain more nutrients than others, and so on. Some foods are low in fat, some are rich in fat, some contain more carbohydrates than others, and so on. This classification of food is based on their nutrient content. Foods are categorized according to the proportions of fat, carbohydrates, protein, calories and other factors such as tastes and textures. Foods are then classified into different groups, for example, whole foods (which include fruits, vegetables, legumes and other kinds of grains), complex carbohydrates (which includes potatoes, cereals, breads and pasta), complex sugars (which include honey, various fruits, maple syrup), and simple sugars (which include table sugar, evaporated cane sugar, and so on).