News tagged with nutrients

Related topics: cells , protein , plants , blood vessels , cancer cells

Gut bacteria promote obesity in mice

A species of gut bacteria called Clostridium ramosum, coupled with a high-fat diet, may cause animals to gain weight. The work is published this week in mBio, the online open-access journal of the American Society for Microbiol ...

Sep 30, 2014
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Study identifies 41 powerhouse fruits and vegetables

(HealthDay)—Forty-one powerhouse fruits and vegetables (PFV) have been classified and validated, according to a study published online June 5 in the U.S. Centers for Disease Control and Prevention's Preventing Ch ...

Jun 10, 2014
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Altruistic suicide in organisms helps kin

The question of why an individual would actively kill itself has been an evolutionary mystery. Death could hardly provide a fitness advantage to the dying individual. However, a new study has found that in single-celled algae, ...

Feb 27, 2014
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Researchers discover secret of bowel movement

High performance athletes like Olympians can push their bodies to optimal potential, but some of the ways the human body actually works is still a mystery. Now McMaster University researchers have cleared up one aspect of ...

Feb 24, 2014
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Are raw food claims overcooked?

Eating only raw foods has emerged as a popular dietary trend. Proclaiming an emotive health message, it is enough to make you think twice before next adding heat to your food. But fear not – on the scales ...

Feb 20, 2014
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Nutrient

A nutrient is a chemical that an organism needs to live and grow or a substance used in an organism's metabolism which must be taken in from its environment. They are used to build and repair tissues, regulate body processes and are converted to and used as energy. Methods for nutrient intake vary, with animals and protists consuming foods that are digested by an internal digestive system, but most plants ingest nutrients directly from the soil through their roots or from the atmosphere.

Organic nutrients include carbohydrates, fats, proteins (or their building blocks, amino acids), and vitamins. Inorganic chemical compounds such as dietary minerals, water, and oxygen may also be considered nutrients. A nutrient is said to be "essential" if it must be obtained from an external source, either because the organism cannot synthesize it or produces insufficient quantities. Nutrients needed in very small amounts are micronutrients and those that are needed in larger quantities are called macronutrients. The effects of nutrients are dose-dependent and shortages are called deficiencies.

See healthy diet for more information on the role of nutrients in human nutrition.

This text uses material from Wikipedia licensed under CC BY-SA