Why You Eat for the Joy of It

A hunger hormone may drive the impulse to chow down even when full, researchers say

Why do people keep eating when they already feel full? New research in mice suggests it may have something to do with a hunger hormone that tells you to keep chowing down. “What we show is that there may be situations where we are driven to seek out and eat very rewarding foods, even if we’re full, for no other reason than our brain tells us to,” Dr. Jeffrey Zigman, an assistant professor of internal medicine and psychiatry at the University of Texas Southwestern Medical Center and co-senior author of the new study, said in a news release from the school.

The researchers studied the hormones by experimenting with mice to determine whether they changed their food preferences after getting doses of the hormone, known as ghrelin. In one experiment, mice who received ghrelin wanted to hang out in a room where they’d previously gotten high-fat food. Other mice weren’t concerned about the room. “We think the ghrelin prompted the mice to pursue the high-fat chow because they remembered how much they enjoyed it,” study author Dr. Mario Perello, a postdoctoral researcher in internal medicine, said in the same news release. “It didn’t matter that the room was now empty; they still associated it with something pleasurable.” According to the researchers, the brains of humans and mice handle pleasure in similar ways. They next want to figure out how the brain regulates the actions of the hormone. The study appears online and in a future edition of the journal Biological Psychiatry..

SOURCE: University of Texas Southwestern Medical Center, news release, Dec. 28, 2009


Bookmark and Share
Posted: 01/26/2010 at 04:04 PM
[ ]   [ ]   [ ]   [ ]  

Posted: 01/26/2010 at 04:04 PM
[ ]   [ ]   [ ]   [ ]  

Fair Use Notice: This site contains copyrighted material the use of which has not always been
specifically authorized by the copyright owner. We are making such material
available for commentary and criticism in an efforts to advance understanding of holistic health, environmental, political, human rights, economic, democracy, scientific, and social justice issues, etc.
We believe this constitutes a ‘fair use’ of any such copyrighted material as
provided for in section 107 of the US Copyright Law. In accordance with Title
17 U.S.C. Section 107, the material on this site is distributed without profit to
those who have expressed a prior interest in receiving the included
information for research and educational purposes. If you wish to use
copyrighted material from this site for purposes of your own that go beyond
‘fair use’, you must obtain permission from the copyright owner.


Leave a Reply

Your email address will not be published. Required fields are marked *

*

This site uses Akismet to reduce spam. Learn how your comment data is processed.

HerbSpecialists.com

Nature’s Sunshine

Holistic Pet Journal

Reciprocal Links

Top