Medical Glossary

This glossary contains:
19186
medical terms

Glycemic Index




Glycemic Index

A measure of the rate at which a carbohydrate will enter the bloodstream as glucose. Some simple sugars, such as table sugar, will enter the bloodstream slower than many complex carbohydrates, such as bread, rice, and potatoes. The faster a carbohydrate enters the bloodstream, the higher its glycemic index. The higher the glycemic index of a carbohydrate, the greater the increase in insulin levels. Fruits and vegetables tend to have a low glycemic index, whereas breads, pasta, grains, and starches tend to have a high glycemic index.

RELATED TERMS
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Carbohydrate
One of the three main classes of foods and a source of energy. Carbohydrates are mainly sugars and starches that the body breaks down into glucose (a simple sugar that the body can use to feed its cells). The body also uses carbohydrates to make a substance called glycogen that is stored in the liver and muscles for future use. If the body does not have enough insulin or cannot use the insulin it has, which are the basic problems in most forms of diabetes, then the body will not be able to use carbohydrates for energy the way it should.

Glucose
The only simple carbohydrate that circulates in the bloodstream. Glucose is the primary fuel used by the brain. It can also be stored in the liver and muscles in a polymer form known as glycogen.

Sugar
A class of carbohydrates that taste sweet. Sugar is a quick and easy fuel for the body to use. Types of sugar are lactose, glucose, fructose, and sucrose.

Carbohydrates
A type of food, usually derived from plants; one of three nutrients that supply calories to the body; includes simple carbohydrates (sugar, fruit) and complex carbohydrates (vegetables, starches).

Insulin
The hormone that drives incoming nutrients into cells for storage. Excess insulin is the primary pillar of aging.



SIMILAR TERMS
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Glycemia
A medical term that indicates the level of glucose in the blood.

Glycemic Response
The effect of different foods on blood glucose (sugar) levels over a period of time. Researchers have discovered that some kinds of foods may raise blood glucose levels more quickly than other foods containing the same amount of carbohydrates.

Glycine 1.5 per cent in plastic container
Glycine 1.5 per cent in plastic container is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): glycine.

Glycogen
The storage form of glucose. Only glycogen from the liver can be used to restore blood glucose levels.

Glycogen storage diseases
A group of birth defects that change the way the liver breaks down glycogen. See also Glycogen.

Glycogenesis (or glucogenesis)
The process by which glycogen is formed from glucose.

Glycolax
Glycolax is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): polyethylene glycol 3350.

Glycoprep
Glycoprep is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): polyethylene glycol 3350; potassium chloride; sodium bicarbonate; sodium chloride; sodium sulfate, anhydrous.

Glycopyrrolate
Glycopyrrolate is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): glycopyrrolate.

Glycort
Glycort is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): hydrocortisone.

Glycosuria, Glucosuria
Having glucose (sugar) in the urine.

Glycosylated Hemoglobin
A measure of the long-term control of blood glucose determined by the amount of carbohydrate-modified hemoglobin in the red blood cells. The higher the amount of glycosylated hemoglobin, the worse the control of blood glucose levels.



PREVIOUS AND NEXT TERMS
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Guanine
(guanine triphosphate) One of the 4 types of nucleotides that make up DNA. Base pairs with cytosine by 3 hydrogen bonds.

Glucagon
The hormone from the pancreas that causes the release of stored carbohydrate in the liver to restore blood glucose levels. Glucagon uses the second messenger cyclic AMP to exert its biological action.

Glucose
The only simple carbohydrate that circulates in the bloodstream. Glucose is the primary fuel used by the brain. It can also be stored in the liver and muscles in a polymer form known as glycogen.

Glucose Tolerance
The ability of muscle cells and the liver to remove glucose from the bloodstream. As you age, glucose tolerance decreases.

Glycemic Index

Glycogen
The storage form of glucose. Only glycogen from the liver can be used to restore blood glucose levels.

Glycosylated Hemoglobin
A measure of the long-term control of blood glucose determined by the amount of carbohydrate-modified hemoglobin in the red blood cells. The higher the amount of glycosylated hemoglobin, the worse the control of blood glucose levels.

Growth Hormone
The hormone released from the pituitary gland. It interacts with fat cells to release fatty acids, and with the liver to produce insulin-like growth factors.

Growth Hormone-Releasing Hormone (GHRH)
The hormone released from the hypothalamus. GHRH causes the release of growth hormone from the pituitary. GHRH uses cyclic AMP as its second messenger.

Ganglia
Clusters of cell bodies of neurons outside of the central nervous system.

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This dictionary contains 19186 terms.







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