Navigation Links
Brains of Obese May Crave High-Calorie Foods More: Study
Date:9/19/2011

By Randy Dotinga
HealthDay Reporter

MONDAY, Sept. 19 (HealthDay News) -- A new study links low blood sugar in obese people to a greater desire within the brain for high-calorie foods, a finding that offers insight into why people who become overweight tend to stay that way.

"Their brains may be driving them to eat more and desire these foods more, and that may promote overeating," explained study author Kathleen A. Page. "We don't know if that's a consequence of obesity or contributes to the obese state. Are their brains wired differently from the start? Or does that happen after they become obese?"

Whatever the case, the research points to the importance of keeping blood sugar levels stable, said Page, an assistant professor of medicine at the University of Southern California.

Levels of sugar in the blood are directly linked to energy, and those levels often drop after eating lunch and cause a mid-afternoon slump. Blood sugar levels also drop in the morning, and after you eat a high-sugar food, Page said. In that case, the body's processing of the excess sugar can cause levels to dip.

In the new study, published in the Sept. 19 online issue of The Journal of Clinical Investigation, Page and colleagues tried to figure out if dips in blood sugar affect obese people differently than those who aren't overweight.

In the study, functional MRI scanners monitored the brains of five obese and nine non-obese people as researchers adjusted the levels of sugar in their blood, changing them from normal to low. At the same time, the researchers showed them pictures of foods that are low-calorie (various fruits and vegetables, tofu, soybeans, salads) and high-calorie foods (brownies, donuts, fried chicken, steak, ice cream and more).

The researchers found that the obese people had less brain activity in the area known as the prefrontal cortex, where powers of inhibition (choosing not to do things) are based, even when their blood sugar levels were normal. "That implies that obese people may have a harder time fighting off the urge to eat, especially when their sugar levels are below normal," Page said.

Jean-Philippe Chaput, an assistant professor at the University of Ottawa's School of Human Kinetics, said the research is relevant because it provides greater understanding into how blood sugar affects eating habits. "Future obesity treatments will need to take that aspect into account if we want to improve our chances of success," Chaput said.

But Dr. Marc-Andre Cornier, an associate professor of medicine at the University of Colorado, cautioned that the study doesn't definitively link blood sugar to hunger. "The lower glucose may have impacted another factor that in turn was responsible for the effects," he said, adding that it's "pure speculation" to say that keeping blood sugar levels stable after meals will reduce hunger.

More information

For more about obesity, try the U.S. National Library of Medicine.

SOURCES: Kathleen A. Page, Ph.D., assistant professor, medicine, University of Southern California, Los Angeles; Jean-Philippe Chaput, Ph.D., junior research chair, Healthy Active Living and Obesity Research, and assistant professor, School of Human Kinetics, University of Ottawa; Marc-Andre Cornier, M.D., associate professor, medicine, University of Colorado, Denver; Sept. 19, 2011, The Journal of Clinical Investigation, online


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Alzheimers brains found to have lower levels of key protein
2. Learning information the hard way may be best boot camp for older brains
3. Profound reorganization in brains of adults who stutter
4. Like Those in Humans, Baby Chimps Forebrains Immature
5. Concussion Project Finds Disease in Two Autopsied Brains
6. Human Brains Wired to Empathize, Study Finds
7. Picower: 1 skull + 2 brains = 4 objects in mind
8. Some Brains Easily Distracted by Rewarding Stimuli
9. Scientists Find Molecular Similarities in Brains of Those With Autism
10. Mammals Brains Grew Larger to Enhance Sense of Smell: Study
11. Brains of Autistic Kids Still Larger at Age 4, 5
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Brains of Obese May Crave High-Calorie Foods More: Study
(Date:12/6/2016)... (PRWEB) , ... December 06, 2016 , ... ... the launch of a Kickstarter crowd funding campaign ( http://kck.st/2g3a1so ) for the ... active alerts and even taking an EKG from the watch while sharing these ...
(Date:12/6/2016)... ... December 06, 2016 , ... ... the newly updated International Audit Protocol Consortium (IAPC) EHS audit protocol for ... to understand the scope of their EHS regulatory obligations and rapidly collect, share, ...
(Date:12/5/2016)... Angeles (PRWEB) , ... December 05, 2016 , ... What: ... feed of the North Pole to our patients – using a video monitor and ... video. The hospital will transform the Auditorium into a Christmas Wonderland, which is where ...
(Date:12/5/2016)... ... December 05, 2016 , ... SyncDog, Inc., the leading ... magazine, a leading online tech news platform connecting technology innovators with news, experience, ... explores the state of enterprise mobility security today, and how the SyncDog SentinelSecure™ ...
(Date:12/5/2016)... ... December 05, 2016 , ... Progressive ... of L-Citrulline and glutathione to enhance production of nitric oxide (NO). , NitroGenesis ... shown to produce NO twice as effectively and sustains NO blood levels twice ...
Breaking Medicine News(10 mins):
(Date:12/5/2016)... PUNE, India , December 5, 2016 /PRNewswire/ ... Market Research, titled, "Global Cancer Biomarkers Market - Global Opportunity ... biomarkers market is projected to reach $15,737 million by 2022 ... from 2016 to 2022. Omic technologies segment accounted for more ... expected to maintain its dominance during the forecast period. ...
(Date:12/5/2016)... --  TrainerMD , the first HIPAA compliant software collaboration platform for ... Styku . Styku, a California -based ... users world-class, real-time 3D body scanning and analysis. Together with its ... hear and feel their health like never before. ... , , ...
(Date:12/5/2016)...  CVS Health, the nation,s largest pharmacy innovation company, ... of 100 percent on the Corporate Equality Index (CEI) ... annual national benchmarking survey and report on corporate policies ... Human Rights Campaign Foundation. "Our company,s ... customers and suppliers bring to CVS Health," said ...
Breaking Medicine Technology: