Swiss scientists reveal the mechanism responsible for aging hidden deep within mitochondria—and dramatically slow it down in worms by administering antibiotics to the young.
May 22, 2013
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Excess nutrients, such as fat and sugar, don't just pack on the pounds but can push some cells in the body over the brink. Unable to tolerate this "toxic" environment, these cells commit suicide.
Jul 5, 2011
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Researchers at the Francis Crick Institute and King's College London have created a tool to predict the effects of different diets on both cancerous cells and healthy cells.
Jan 27, 2023
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Some species of gut-dwelling bacteria activate nerves in the gut to promote the desire to exercise, according to a study in mice that was led by researchers at the Perelman School of Medicine at the University of Pennsylvania. ...
Dec 14, 2022
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The immune system has long been touted as the body's primary defense against invading viruses, with the understanding that a strong immune response swiftly knocks out an infection while a weak one allows it to linger, leading ...
Nov 16, 2022
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Mice who have been tricked into thinking they are fasting manage inflammation more easily, according to neurobiologists at The University of Manchester and collaborators from the University of Naples "Federico II," in Italy.
Oct 3, 2022
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The flow velocity in our digestive system directly determines how well nutrients are absorbed by the intestine and how many bacteria live inside it. This is the result of a new study by researchers from the Technical University ...
Sep 26, 2022
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Cancer cells often grow in environments that are low in nutrients, and they cope with this challenge by switching their metabolism to using proteins as alternative "food". Building on genetic screens, an international team ...
Sep 9, 2022
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Human breastmilk has long been considered "liquid gold" among clinicians treating premature infants in a newborn intensive care unit (NICU). Breastmilk-fed "preemies" are healthier, on average, than those fed formula. Why ...
Aug 2, 2022
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Millions of children in low- and middle-income nations suffer from environmental enteric dysfunction (EED), a chronic inflammatory disease of the intestine that is the second leading cause of death in children under five ...
Jun 23, 2022
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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
