News tagged with polyunsaturated fatty acids
A new study gauging the impact of consuming more fish oil showed a marked reduction both in inflammation and, surprisingly, in anxiety among a cohort of healthy young people.
Health Jul 13, 2011 | 5 / 5 (8) | 6 |
A single junk food meal – composed mainly of saturated fat – is detrimental to the health of the arteries, while no damage occurs after consuming a Mediterranean meal rich in good fats such as mono-and polyunsaturated ...
Health Oct 30, 2012 | 3.9 / 5 (10) | 0 |
About 300 000 years ago humans adapted genetically to be able to produce larger amounts of Omega-3 and Omega-6 fatty acids. This adaptation may have been crucial to the development of the unique brain capacity in modern humans. ...
Genetics Apr 12, 2012 | 4.6 / 5 (5) | 0 |
There is much confusion at present about the importance of fatty acids in preventing heart attacks. Recent studies have questioned the need to reduce the intake of saturated fatty acids in the diet and to increase that of ...
Health Jun 30, 2011 | 4.3 / 5 (3) | 0 |
Researchers from the Nutritional Epidemiology Joint Research Unit have just published a study showing that, in men with a previous history of cardiovascular pathologies, supplementation with B vitamins and omega-3 polyunsaturated ...
Health Feb 17, 2012 | 3.3 / 5 (3) | 0
A paper published 15 August 2012 in Biology of Reproduction's Papers-in-Press reveals that eating 75 grams of walnuts a day improves the vitality, motility, and morphology of sperm in healthy men aged 21 to 35.
Obstetrics & gynaecology Aug 15, 2012 | 5 / 5 (2) | 0
(Medical Xpress)—Taking enough omega-3 fatty acid supplements to change the balance of oils in the diet could slow a key biological process linked to aging, new research suggests.
Health Oct 01, 2012 | 5 / 5 (2) | 0 |
(HealthDay)—For statin-treated patients with coronary artery disease, decreases in the ratio of serum n-3 to n-6 polyunsaturated fatty acids (PUFAs) correlate with atherosclerosis progression, according ...
Cardiology Jan 23, 2013 | 5 / 5 (2) | 0
(HealthDay)—A supplement containing a combination of lutein, zeaxanthin, and ω-3 long-chain polyunsaturated fatty acids (LC-PUFAs) significantly benefits patients with age-related macular degeneration ...
Ophthalmology Mar 26, 2013 | 5 / 5 (2) | 0
A possible link between what a mother eats during pregnancy and the risk of her child developing allergies has been identified in new research published in this month's The Journal of Physiology.
Health Sep 09, 2011 | 4.5 / 5 (2) | 0 |
Everyone knows that what mom eats when pregnant makes a huge difference in the health of her child. Now, new research in mice suggests that what she ate before pregnancy might be important too. According to a new research ...
Genetics Sep 20, 2012 | 3 / 5 (2) | 0 |
Flu viruses are a major cause of death and sickness around the world, and antiviral drugs currently do not protect the most seriously ill patients. A study published March 7th by Cell Press in the journal Cell reveals that a ...
Medical research Mar 07, 2013 | 3 / 5 (2) | 0 |
We are all encouraged to eat polyunsaturated fatty acids, as these are "good for us". The (relative) levels of particular classes of polyunsaturated fatty acids have been associated with a plethora of human illnesses. The ...
Medical research Apr 13, 2011 | 5 / 5 (1) | 0
University of Kansas scientists have found new evidence that infant formulas fortified with long chain polyunsaturated fatty acids (LCPUFA) are good for developing brains and hearts.
Health Sep 19, 2011 | 5 / 5 (1) | 0
Dietary advice about fats and the risk of heart disease is called into question in BMJ today as a clinical trial shows that replacing saturated animal fats with omega-6 polyunsaturated vegetable fats is linked to an increa ...
Cardiology Feb 05, 2013 | 5 / 5 (1) | 1 |
In nutrition, polyunsaturated fat is an abbreviation of polyunsaturated fatty acid. That is a fatty acid in which more than one double bond exists within the representative molecule. That is, the molecule has two or more points on its structure capable of supporting hydrogen atoms not currently part of the structure. Polyunsaturated fatty acids can assume a cis or trans conformation depending on the geometry of the double bond.
The lack of the extra hydrogen atoms on the molecule's surface typically reduces the strength of the compound's intermolecular forces, thus causing the melting point of the compound to be significantly lower. This property can be observed by comparing predominately unsaturated vegetable oils, which remain liquid even at relatively low temperatures, to much more saturated fats such as butter or lard which are mainly solid at room temperature. Trans fats are more similar to saturated fat than are cis fats in many respects, including the fact that they solidify at a lower temperature.
A fatty acid has a carboxylic acid at one end and a methyl group at the other end. Carbon atoms in a fatty acid are identified by Greek letters on the basis of their distance from the carboxylic acid. The carbon atom closest to the carboxylic acid is the alpha carbon, the next adjacent carbon is the beta carbon, etc. In a long-chain fatty acid the carbon atom in the methyl group is called the omega carbon because omega is the last letter of the Greek alphabet.
Omega-3 fatty acids have a double bond three carbons away from the methyl carbon, whereas omega-6 fatty acids have a double bond six carbons away from the methyl carbon. The illustration below shows the omega-6 fatty acid, linoleic acid.
For more information about Polyunsaturated fat, read the full article at
This text uses material from Wikipedia and is available under the GNU Free Documentation License.