Nutrition is the process of nourishing or sustaining oneself, particularly the process by which a living organism assimilates food and uses it to grow and replace tissues. It is the biochemical and physiological process by which an organism obtains nutrients from food to maintain its life. Nutrition science is the study of nutrition, usually focusing on human nutrition. It involves understanding how nutrients in foods affect the body, and the relationship between diet, health, and disease. People need to eat a varied diet to get a wide range of nutrients.
The short answer to the question “What is nutrition in one word?” is “nutrients”. Primitive human nutrition consisted of searching for nutrients similar to those of other animals, but it changed with the Neolithic Revolution when humans developed agriculture to produce food. Nutritionists use ideas from molecular biology, biochemistry, and genetics to understand how nutrients affect the human body. Nutrition is the study of how food affects the body. It provides organisms with nutrients that can be metabolized to create energy and chemical structures.
A lack of sufficient nutrients causes malnutrition. Prokaryotes, including bacteria and archaea, vary greatly in how they obtain nutrients according to nutritional groups. Although perspiration is a necessary supplement to nutrition, it can easily become excessive, especially when the plant cannot recover easily. Mineral cycles include the carbon cycle, sulfur cycle, nitrogen cycle, water cycle, phosphorus cycle, and oxygen cycle, among others, which are continuously recycled together with other mineral nutrients to convert them into productive ecological nutrition. Finding out if a person is getting the right nutrition for their body involves examining a person's individual needs and diet over time. A nutritionist learns about nutrition through self-study or formal education, but does not meet the requirements to use RD or RDN degrees.
In domestic animals, such as pets, livestock and working animals, as well as other animals in captivity, humans manage nutrition through animal feed. Most cultures add herbs and spices to foods before eating them to add flavor, although most do not significantly affect nutrition. Chemists in the 18th and 19th centuries experimented with different elements and food sources to develop theories about nutrition.