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Human nutrition deals with the provision of essential nutrients in food that are necessary to support human life and good health. [1] Poor nutrition is a chronic problem often linked to poverty, food security , or a poor understanding of nutritional requirements. [ 2 ]
A nutrient is a substance used by an organism to survive, grow and reproduce. The requirement for dietary nutrient intake applies to animals, plants, fungi and protists. Nutrients can be incorporated into cells for metabolic purposes or excreted by cells to create non-cellular structures such as hair, scales, feathers, or exoskeletons.
Due to its importance in human health, the study of nutrition has heavily emphasized human nutrition and agriculture, while ecology is a secondary concern. [ 4 ] Nutrients
According to these two organizations, health diets are: Adequate, as they meet, without exceeding, our body’s energy and essential nutrient requirements in support of all the many body functions. Diverse, as they include various nutritious foods within and across food groups to help secure the sufficient nutrients needed by our bodies.
The science of nutrition attempts to understand how and why specific dietary aspects influence health. Nutrients in food are grouped into several categories. Macronutrients are fat, protein, and carbohydrates. Micronutrients are the minerals and vitamins. Additionally, food contains water and dietary fiber.
This week, U.S. News & World Report revealed its annual list of the Best Diets Overall, chosen by medical and nutrition experts. The 10 science-backed diets have been shown to reduce disease risk.