unsaturated fat

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fat

 [fat]
1. the adipose tissue of the body.
2. a triglyceride (or triacylglycerol) that is an ester of fatty acids and glycerol. Each fat molecule contains one glycerol residue connected by ester linkages to three fatty acid residues, which may be the same or different. The fatty acids may have no double bonds in the carbon chain (saturated fatty acids), one double bond (monounsaturated), or two or more double bonds (polyunsaturated). Essential fatty acids cannot be synthesized by the body but must be obtained from the diet or from intravenous infusion of lipids.
Saturated and Unsaturated Fats. All of the common unsaturated fatty acids are liquid (oils) at room temperature. Through the process of hydrogenation, hydrogen can be incorporated into certain unsaturated fatty acids so that they are converted into solid fats for cooking purposes. Margarine is an example of the hydrogenation of unsaturated fatty acids into a solid substance.
brown fat a thermogenic type of adipose tissue containing a dark pigment, and arising during embryonic life in certain specific areas in many mammals, including humans (see illustration); it is prominent in the newborn. Called also brown adipose tissue.
Sites of brown fat in the neonate. From McKinney et al., 2000.
neutral fat fat (def. 2).
polyunsaturated fat a fat containing polyunsaturated fatty acids; see also fat.
saturated fat a fat containing saturated fatty acids; see also fat.
unsaturated fat a fat containing unsaturated fatty acids; see also fat.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

un·sat·ur·at·ed fat·ty ac·id

a fatty acid, the carbon chain of which possesses one or more double or triple bonds (for example, oleic acid, with one double bond in the molecule, and linoleic acid, with two); called unsaturated because it is capable of absorbing additional hydrogen.
Farlex Partner Medical Dictionary © Farlex 2012

unsaturated fat

n.
Any of various fats derived from plant and some animal sources, especially fish, that are liquid at room temperature. Increasing dietary intake of unsaturated fats while reducing intake of saturated fats can reduce LDL cholesterol in the bloodstream.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

unsaturated fat

An alkyl-chain fatty acid with one or more double (ethylenic) bonds between carbons (called unsaturated as the chain is capable of absorbing more hydrogen). Unsaturated fats  (UFs) have lower melting points, and most are liquid at room temperature. UFs can be monounsaturated (i.e., have one double bond, such as oleic acid), which are widely distributed in nature, or polyunsaturated (i.e., has two or more double bonds, such as linolenic acid), which are found in safflower and corn oils.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

un·sat·ur·at·ed fat

(ŭn-sach'ŭr-āt-ĕd fat)
Fat containing a high proportion of unsaturated fatty acids, i.e., fatty acids with double or triple bonds between carbon atoms. May have a healthy effect on the heart when used in moderation by lowering cholesterol levels.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

unsaturated fat

see FATTY ACID.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
There is also a third type of fat called hydrogenated fat, which is made by chemically processing unsaturated fats into hard fats.
* Triglycerides dropped (that's also good) with extra unsaturated fat or protein, but not with extra carbs.
Unsaturated fats - which incorporate polyunsaturated fats and monosaturated fats - are necessary in small quantities for good health.
Replacing saturated fats with unsaturated fats, specifically, polyunsaturated fats (PUFAs), the kind found in walnuts, com oil, sunflower oil, and fatty fish, and/or whole grains, may help reduce the risk of cardiovascular disease, according to a new study.
Instead, the Committee suggests focusing on eating an overall healthy diet that contains plenty of unsaturated fats from plant foods and is low in processed foods and added sugar.
The researchers gave the highest diet scores to people who ate less meat, dairy, and saturated fat and more fruits, vegetables, beans, fish, grains, nuts, and unsaturated fats. People with the highest scores had a 23 percent lower risk of dying during the 10-year study.
Unsaturated fats can be broken down into poly-unsaturated and mono-unsaturated.
They concluded, "The replacement of 2% of energy from trans fats with energy from unhydrogenated, unsaturated fats would reduce [heart attack] risk by 53%."
These results "are very definitive" in pointing out the advantages of reducing overall fat and switching to products that contain unsaturated fats, says Lichtenstein.
Now, nutrition experts recommend increasing intake of unsaturated fats, which can lead to reduced risk of heart disease, improved cognitive function, and lower incidence of depression.
Another guide is that most sat fats are the animal variety and most unsaturated fats are vegetable ones.
Washington, May 20 ( ANI ): Researchers have said that a diet that combines unsaturated fats with nitrite-rich vegetables, like olive oil and lettuce, could help protect you from hypertension.