Today : Thursday - Jul 31, 2014, 12:44am (GMT+5.5)
All News  
Top News
National News
International News
Business News
Sports News
   » Cricket
   » Football
Entertainment News
Sci - Tech
Politics News
Health & Fitness
Education
Travel
Lifestyle
Gulf News
Featured
 
::| Latest News
News in Pictures

Nelson Mandela, who is although seriously sick, is the one making decisions about his own fate, his daughter has said.The comments were made by Zindzi in a joint interview with mother, Winnie Madikizela-Mandela, with British television ITN.They both were critical of public discussions about whether or not the family should keep the ailing Nobel peace laureate alive, news.com.au reports.

Health & Fitness
 

Increased sensitivity to cheap, high-calorie food could be behind obesity

Friday - Apr 06, 2012, 03:41pm (GMT+5.5)
[+] Text [-]

Washington -  One of the main reasons for dramatic increase in obesity may be a heightened sensitivity to heavily endorsed and easily accessible high-calorie foods, researchers say.

Obesity is increasing worldwide in adults and children and is currently viewed by many as one of the most serious threats to public health.

“Functional neuroimaging of the human brain allows non-invasive mapping of brain activity in health and disease,” explained review author Dr. Alain Dagher from the Montreal Neurological  Institute, McGill University.

“It is now commonly used to try to understand the neural control of eating in humans, and patterns of brain activity thought to underlie obesity have emerged.

“In particular, there has been great interest in looking at the brain for the source of vulnerability to overeating in a world of cheap, abundant, high-calorie food. As a result of this research,  differences between lean and obese individuals are starting to emerge.”

In the paper, Dr. Dagher has discussed some of the more consistent findings of this research. Neuroimaging studies have led to the identification of a brain network for appetite control,  uncovered learning and motivational signals that are linked with appetite, and helped to unravel how reward networks are linked with food intake.

Studies have shown that brain mechanisms of obesity are very complex and are not just related to abnormalities in food-associated reward signaling.

Research suggested that overeating has its origins where a person makes a food choice and that anticipatory signals play a critical role in the vulnerability to obesity.

Importantly, obese individuals exhibit greater brain activation in response to sweet or fatty food cues, suggesting a key role for signals associated with motivation to eat. “The emerging imaging literature supports the view that although there is not a single pathway leading to obesity, it is a neurobehavioral problem: a disease that results from a vulnerable

brain in an unhealthy environment,” explained Dr. Dagher.

“The demonstration that humans are sensitive to food cues, such as advertising, especially when these food cues are associated through past experience with high-calorie foods, cannot be

ignored. As for tobacco in the 1990s, the neuroscience of appetite will be called upon to inform and justify the public policy decisions that will be needed to address this most significant

public health problem,” Dr. Dagher added.

The study has been published by Cell Press in the journal Trends in Endocrinology and Metabolism.





|

Rating (Votes: )   

blog comments powered by Disqus

Other Articles:
Active older adults less likely to experience functional limitations (6th Apr, 2012)
More than 2,000 new cancer cases in Himachal in last one year (6th Apr, 2012)
Majority of women not taking recommended daily aspirin to prevent heart disease (5th Apr, 2012)
Red wine, fruit compound may be vital weapon against obesity (5th Apr, 2012)
Australian breast implant rupture cases on rise (5th Apr, 2012)
New compound staves off obesity (5th Apr, 2012)
Low-glycemic breakfast can control BP throughout the day (5th Apr, 2012)
Eating berries can protect men against Parkinson’s disease (5th Apr, 2012)
Cheap supermarkets `may boost your BMI and waist circumference` (5th Apr, 2012)
Cholera epidemic kills 11 in Ghana (5th Apr, 2012)
Swine flu reported in Himachal (5th Apr, 2012)
Consuming sports energy drinks at desk blamed for rising obesity levels (5th Apr, 2012)
Diet literally `shapes our teeth` (4th Apr, 2012)
High fat diets cause damage to blood vessels earlier than previously thought (4th Apr, 2012)
`Positive stress` may help prevent glaucoma (4th Apr, 2012)
Eating cruciferous vegetable may help improve breast cancer survival (4th Apr, 2012)
Caffeine plus exercise may help fight sunlight-caused skin cancer (4th Apr, 2012)
Why women smokers find it harder to kick the butt (4th Apr, 2012)
Statins could fight Alzheimer’s if given in early stages (4th Apr, 2012)
No extra cancer risk for metal-on-metal hip replacement patients (4th Apr, 2012)
New compound may halt growth of malaria parasite (4th Apr, 2012)
Low energy density diets may help lose weight (4th Apr, 2012)
Combination drug therapy may help cut malaria by 30 per cent (4th Apr, 2012)
How testosterone fights blues (3rd Apr, 2012)
Cheap, safe device helps avoid premature birth (3rd Apr, 2012)




Contact Us | Advertise with Us | Privacy Policy | Disclaimer | Terms of Use