Health

Quinn on Nutrition: What's in your lunch bag?

I have to admit I was pretty proud of myself when I unpacked the leftovers from my lunch bag this week. Almost by accident, what I had pulled out of the fridge as I ran out of the house turned out to be a fairly balanced ...

Health

What happens when you run on a full stomach?

Every year, thousands of runners take part in an event called the Krispy Kreme Challenge. The challenge consists of running 2.5 miles through downtown Raleigh, from NC State University to a Krispy Kreme store, consuming a ...

Health

Multivitamins and supplements: To take or not to take?

"People ask me this question quite often: 'Should I be taking certain vitamins and supplements?' And the answer is, quite honestly, 'It depends,'" says Anne Harguth, registered dietitian at Mayo Clinic Health System.

Health

Five diet foods that are high in fiber

(HealthDay)—Dietary fiber is a unique component of many foods. It has no actual nutrients yet helps ward off a host of diseases and has even been associated with lower body weight.

Cancer

Genetic 'whodunnit' for cancer gene solved

Long thought to suppress cancer by slowing cellular metabolism, the protein complex AMPK also seemed to help some tumors grow, confounding researchers. Now, Salk Institute researchers have solved the long-standing mystery ...

Health

Keeping track of healthy calories

(HealthDay)—Even when eating nutritiously, healthy aging depends on moderating the number of calories you take in.

Diseases, Conditions, Syndromes

Starving fungi could save millions of lives each year

Researchers have identified a potentially new approach to treating lethal fungal infections that claim more than 1.6 million lives each year: starving the fungi of key nutrients, preventing their growth and spread.

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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