Losing weight, maintain weight, sate off the effects of condition are the reasons for most to embarking a new and lasting health and fitness lifestyle. Exercise changes body composition, stamina and strength. But changing food related thoughts and behaviors can be the key to lasting weight loss. Every time you diet to lose weight, you lose lean tissue; therefore, you must decrease caloric intake to avoid subsequent weight gain.

Wednesday, December 09, 2015

The roles of carbohydrate in human nutrition

Carbohydrates are a class of organic molecules consisting of a carbon backbone with attached oxygen and hydrogen. They are polyhydroxy aldehydes, ketones, alcohols, acids, their simple derivatives and their polymers having linkages of the acetal type.

Carbohydrates have a wide range of physiological effects which may be important to health such as:
*Carbohydrate as an energy source
*Effects on satiety
*Control of blood glucose and insulin metabolism
*Protein glycosylation
*Cholesterol and triglyceride metabolism
*Bile acid dehydroxylation
*Bowel habit/lavation/motor activity
*Effects on large bowel microflora

The role of carbohydrates in the body is to provide energy; they also play a small role in the growth of the body. Carbohydrates are the starches and sugars that provide the body with its most readily digestible fuel. Without fuel sources over an extended time, the human dies from starvation.

Food rich in carbohydrates must be chewed for a long time to assimilate the digestive juices from the saliva, thus helping the digestive process.

A balanced intake of energy nutrients is vital. If carbohydrate intake is too low, the body will break down both stored fat and internal protein to meets its demand fuel needs. It will cause ketosis.  Fifty grams of carbohydrate each day is usually enough to prevent ketosis.

Numerous studies have linked regular consumption of whole grains with a lower risk of certain cancers and heart disease. Many nutrition experts attribute these health benefits to the fiber contained in whole grains.

Carbohydrates that serve a function in the cell membrane structure are associated with other proteins or lipids. Only about 10% of these cell membrane carbohydrates are associated with lipids.
The roles of carbohydrate in human nutrition

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