Junk food addicts show same brain activity as drug addicts
Thursday 07 April 2011
Indulging in food cravings could be more than just a matter of a weak will. After studying the brain activity of women presented with a chocolate milkshake, researchers in the US found that seeing the tempting dessert drink activated the same parts of the brain as a drug addict who sees cocaine.
The Yale University study - published online this week and due to appear in the August issue of Archives of General Psychiatry - found that higher food addiction scores correlated with greater activation in certain areas of the brain - the same areas that light up among people with a substance dependence.
Participants included 48 healthy young women ranging from lean to obese. They were presented with both a chocolate milkshake and a tasteless control solution. Milkshakes were chosen not only for their high fat and sugar content, but also because it allowed participants to keep still during head scans.
The implications of the study could be wide-ranging. One-third of American adults are obese and suffer from obesity-related diseases, researchers point out. Most obesity treatments fail and patients regain the weight within five years. But if certain foods are addictive, not only could that explain why some people can't lose weight, it could also change the dialogue on obesity and food advertising, the study suggests.
"If food cues take on enhanced motivational properties in a manner analogous to drug cues, efforts to change the current food environment may be critical to successful weight loss and prevention efforts," reads the study. "Ubiquitous food advertising and the availability of inexpensive palatable foods may make it extremely difficult to adhere to healthier food choices because the omnipresent food cues trigger the reward system."
Researchers from The Scripps Research Institute in Florida came to similar conclusions last year when they found that overconsumption of high-calorie foods can trigger addiction-like responses in the brain. The study, which used lab rats, could help in understanding obesity as a food addiction and in developing therapies for it, researchers said.
Though compulsive eaters can do little to avoid fast-food billboard ads around their city or commercials on TV, the Mayo Clinic offers advice on how to change the food environment at home. For example, keep less food at home than usual to avoid temptation. Keeping the house junk food-free also eliminates visual cues.
Life & Style blogs
This restaurant has misunderstood the concept of 'cheese and biscuits'
Tinder Plus: premium service launches, charging much more for those over 28
The best Oscar dresses of all time
The remarkable archaeological underwater discovery that could open up a new chapter in the study of European and British prehistory
Google Plus might be dead, as ‘Streams’ and ‘Photos’ take its place
- 1 End of the licence fee: BBC to back radical overhaul of how it is funded
- 2 This restaurant has misunderstood the concept of 'cheese and biscuits'
- 3 Raif Badawi, the Saudi Arabian blogger sentenced to 1,000 lashes, may now face death penalty
- 4 Delhi bus rapist blames dead victim for attack because 'girls are responsible for rape'
- 5 PornHub turns masturbation into energy in bid to save the planet
£7 - £9 per hour: Recruitment Genius: Are you outgoing? Do you want to work in...
£45000 - £55000 per annum + 30 days holiday: Ashdown Group: Finance Manager - ...
£28000 - £30000 per annum: Ashdown Group: 3rd Line Support Engineer / Network ...
£26000 - £33000 per annum: Recruitment Genius: A Web Developer is required to ...