Featured Research

from universities, journals, and other organizations

Stomach hormone can fuel or suppress rats’ sugar cravings: Chemical associated with appetite also activates the brain’s pleasure center

Date:
November 15, 2010
Source:
Society for Neuroscience
Summary:
Researchers have found that rats either seek out sweets or lose interest, depending on the action of a stomach hormone called ghrelin. Ghrelin is one of many chemicals in the body that tell the brain when to trigger hunger or fullness.

Researchers have found that rats either seek out sweets or lose interest, depending on the action of a stomach hormone called ghrelin. Ghrelin is one of many chemicals in the body that tell the brain when to trigger hunger or fullness.

Related Articles


New results about this hormone's influence were presented at Neuroscience 2010, the annual meeting of the Society for Neuroscience, held in San Diego.

Recent research showed that, in addition to moderating normal eating habits, ghrelin acts on the brain's reward and pleasure centers -- areas also activated by drugs and sex.

In this study, researchers used tests typically found in alcohol and drug addiction experiments to determine the role of ghrelin in food addiction. While rats pressed a lever hundreds of times to earn a tiny bit of sugar, rats given ghrelin worked almost twice as hard to get the same treat, as though they had not eaten. Yet when the hormone was blocked in hungry rats, they were less willing to labor for a sweet reward, as if they were full. The researchers also found that increasing or decreasing ghrelin influenced whether the animals preferred environments they associated with candy consumption. These findings may help explain why people eat when not hungry and have implications for potential weight-control treatments.

"Our results indicate that ghrelin plays an important role in food intake that is driven by the pleasure of food rather than by hunger," said lead author Karolina Skibicka, PhD, of University of Gothenburg in Sweden. "We believe that future therapies for obesity that limit the intake of sugary and fatty foods could be enhanced with drugs that suppress ghrelin's effects on the reward system."

Research was supported by the Swedish Institute, the Swedish Research Council for Medicine, the European Union 7th Framework, and ALF Göteborg.


Story Source:

The above story is based on materials provided by Society for Neuroscience. Note: Materials may be edited for content and length.


Cite This Page:

Society for Neuroscience. "Stomach hormone can fuel or suppress rats’ sugar cravings: Chemical associated with appetite also activates the brain’s pleasure center." ScienceDaily. ScienceDaily, 15 November 2010. <www.sciencedaily.com/releases/2010/11/101115112846.htm>.
Society for Neuroscience. (2010, November 15). Stomach hormone can fuel or suppress rats’ sugar cravings: Chemical associated with appetite also activates the brain’s pleasure center. ScienceDaily. Retrieved November 26, 2014 from www.sciencedaily.com/releases/2010/11/101115112846.htm
Society for Neuroscience. "Stomach hormone can fuel or suppress rats’ sugar cravings: Chemical associated with appetite also activates the brain’s pleasure center." ScienceDaily. www.sciencedaily.com/releases/2010/11/101115112846.htm (accessed November 26, 2014).

Share This


More From ScienceDaily



More Plants & Animals News

Wednesday, November 26, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

Newsy (Nov. 25, 2014) The US FDA is announcing new calorie rules on Tuesday that will require everywhere from theaters to vending machines to include calorie counts. Video provided by Newsy
Powered by NewsLook.com
Feast Your Eyes: Lamb Chop Sent Into Space from UK

Feast Your Eyes: Lamb Chop Sent Into Space from UK

Reuters - Light News Video Online (Nov. 25, 2014) Take a stab at this -- stunt video shows a lamb chop's journey from an east London restaurant over 30 kilometers into space. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Cambodian Capital's Only Working Elephant to Retire in Jungle

Cambodian Capital's Only Working Elephant to Retire in Jungle

AFP (Nov. 25, 2014) Phnom Penh's only working elephant was blessed by a crowd of chanting Buddhist monks Tuesday as she prepared for a life of comfortable jungle retirement after three decades of giving rides to tourists. Duration: 00:36 Video provided by AFP
Powered by NewsLook.com
Stray Dog Follows Adventure Racing Team for 6-Day Endurance Race

Stray Dog Follows Adventure Racing Team for 6-Day Endurance Race

Buzz60 (Nov. 24, 2014) A Swedish Adventure racing team travels to try and win a world title, but comes home with something way better: a stray dog that joined the team for much of the grueling 430-mile race. Jen Markham has the story. Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins