HOME >> BIOLOGY >> NEWS
New food-addiction link found

UPTON, NY -- Scientists at the U.S. Department of Energy's Brookhaven National Laboratory have found that the mere display of food -- where food-deprived subjects are allowed to smell and taste their favorite foods without actually eating them -- causes a significant elevation in brain dopamine, a neurotransmitter associated with feelings of pleasure and reward. This activation of the brain's dopamine motivation circuits is distinct from the role the brain chemical plays when people actually eat, and may be similar to what addicts experience when craving drugs.

"Eating is a highly reinforcing behavior, just like taking illicit drugs," said psychiatrist Nora Volkow, the study's lead investigator. "But this is the first time anyone has shown that the dopamine system can be triggered by food when there is no pleasure associated with it since the subjects don't eat the food. This provides us with new clues about the mechanisms that lead people to eat other than just for the pleasure of eating, and in this respect may help us understand why some people overeat." The study will appear in the June 1, 2002 issue of Synapse (now available online at http://www3.interscience.wiley.com).

Brookhaven scientists have done extensive research showing that addictive drugs increase the levels of dopamine in the brain, and that addicts have fewer dopamine receptors than non-addicts. Last year, in an effort to understand the relationship of the dopamine system to obesity, they found that obese individuals also had fewer dopamine receptors than normal control subjects.

In the new study, the scientists investigated the role of dopamine in food intake in healthy, non-obese individuals. The researchers used positron emission tomography (PET), a brain-scanning technique, to measure dopamine levels in 10 food-deprived volunteers. Each volunteer was given an injection containing a radiotracer, a radioactive chemical "ta
'"/>

Contact: Karen McNulty Walsh
kmcnulty@bnl.gov
631-344-8350
DOE/Brookhaven National Laboratory
20-May-2002


Page: 1 2 3

Related biology news :

1. New signs of life found at the Poles
2. Key cell-death step found
3. European common frog found to use novel mating strategy
4. Byproduct of water-disinfection process found to be highly toxic
5. Genuine stem cells found in skin might treat hair loss, wounds
6. Flame retardants found on supermarket shelves
7. Anti-cancer compound in vegetables found to block late-stage breast-cancer cell growth
8. Genetic clues found for common congenital brain disorder
9. New clues to hereditary blinding disease found
10. Anti-bacterial additive found in Maryland streams
11. Genetic mutation linked to more aggressive breast cancer found more often in African-Americans

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/27/2021)... ... March 25, 2021 , ... Phlexglobal announced ... Planet Group, has selected Phlexglobal and its innovative regulatory SaaS software, PhlexSubmission, as ... a comprehensive review of five regulatory software companies, with the review team including ...
(Date:3/27/2021)... ... 25, 2021 , ... The 2021 Virtual Conference on Clinical Trial Supply-Europe ... More and more, clinical trial supply conferences are featuring speakers and forums that ... Asymmetrex’s founder and CEO, James L. Sherley, M.D., Ph.D., presented a talk ...
(Date:3/23/2021)... ... March 23, 2021 , ... G-CON Manufacturing (G-CON), the ... by Matica Biotechnology (Matica Bio), a contract development and manufacturing organization (CDMO) specializing ... the cleanroom build out for its new GMP production facility in College Station, ...
Breaking Biology News(10 mins):
(Date:3/27/2021)... ... March 24, 2021 , ... ... Life Sciences and Healthcare firms of all sizes, adds depth to its team ... specialist. Pardillo, who earned his doctorate in computational chemistry from Florida International University ...
(Date:3/27/2021)... ... March 24, 2021 , ... ABI Wellness, ... and reporting approach designed under CEO Mark Watson, today announced a webinar dedicated ... featuring guest speakers Dr. Cameron Clark, Neuropsychologist and Founder of Sharp Thinking, and ...
(Date:3/27/2021)... ... ... The Xtalks editorial team is pleased to announce the launch of the ... joined by editorial team members Ayesha Rashid, Sydney Perelmutter and Mira Nabulsi to discuss ... including insights from industry experts. , The Xtalks Life Science podcast will feature ...
(Date:3/23/2021)... Conn. (PRWEB) , ... March 23, 2021 , ... ... develops solutions for characterizing microbiome populations down to the strain level, recently unveiled ... applications. , Not all microbes are created equal: some are easy to ...
Breaking Biology Technology:
Cached News: