Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

'Traffic light' food labels, positioning of healthy items produce lasting choice changes

07.01.2014
The use of color-coded "traffic light" food labels and changes in the way popular items are displayed appear to have produced a long-term increase in the choice of more healthful food items among customers in a large hospital cafeteria.

A Massachusetts General Hospital (MGH) team reports in the American Journal of Preventive Medicine that the previously reported changes in the proportions of more and less healthy foods purchased in the months after their program began have persisted up to two years after the labeling intervention was introduced.

"Our current results show that the significant changes in the purchase patterns of both hospital employees and all customers resulting from the labels and the choice architecture program did not fade away as cafeteria patrons became used to them," says Anne Thorndike, MD, MPH, of the MGH Division of General Medicine, who led the study. "This is good evidence that these changes in healthy choices persist over time."

Initiated in March of 2010, the program was developed by the research team – including leaders of the MGH Food and Nutrition Service – to deliver information about healthy food choices in a simplified way that did not require reading and understanding detailed food labels. The first phase involved the application of "traffic light" labels – green for the healthiest items, such as fruits, vegetables and lean sources of protein; yellow for less healthy items, and red for those with little or no nutritional value – to all items in the main hospital cafeteria. Several weeks before the labels were introduced, cafeteria cash registers began to identify and record each purchased item as red, yellow or green.

The second "choice architecture" phase, started three months after the labels were introduced, focused on cold beverages, pre-made sandwiches and chips – all of which were rearranged to display more healthful items where they were most likely to be selected. For example, bottled water, diet beverages and low-fat dairy products were positioned at eye level, while beverages with yellow or red labels were placed at lower levels.

As the team reported in the March 2012 American Journal of Public Health, at the end of the initial six-month study period, the program led to significant increases in the purchases of "green" items and reduced purchases of "red" items, with the largest changes in beverage purchases. A subsequent study in the September 2012 American Journal of Preventive Medicine, focused on employees enrolled in a program in which their meals could be paid by payroll deduction, revealed similar changes in purchase patterns across all racial and ethnic groups as well as job types.

The current study analyzed purchase patterns for the 24 months following the program's implementation and found that the changes present at the end of the first year were virtually unchanged at the end of the second. Overall, purchases of "green" items had increased 12 percent, compared with the pre-intervention period, and "red" item purchases dropped 20 percent. Purchases of "red" beverages – primarily sugar-sweetened beverages – dropped 39 percent, while "green" beverage purchases increased 10 percent. The changes remained similar for all types of employees, and overall cafeteria sales during the two-year period were stable.

"These findings are the most important of our research thus far because they show a food labeling and product placement intervention can promote healthy choices that persist over the long term, with no evidence of 'label fatigue,' " says Thorndike, an assistant professor of Medicine at Harvard Medical School. "The next steps will be to develop even more effective ways to promote healthy choices through the food service environment and translate these strategies to other worksite, institutional or retail settings."

Co-authors of the American Journal of Preventive Medicine article are Lillian Sonnenberg, DSc, RD, MGH Nutrition and Food Service; Douglas Levy, PhD, Mongan Institute for Health Policy at MGH; and Jason Riis, PhD, Harvard Business School. The study was supported by the Robert Wood Johnson Foundation, the Donoghue Foundation, and National Heart, Lung, and Blood Institute grant K23 HL93221.

Massachusetts General Hospital, founded in 1811, is the original and largest teaching hospital of Harvard Medical School. The MGH conducts the largest hospital-based research program in the United States, with an annual research budget of more than $775 million and major research centers in AIDS, cardiovascular research, cancer, computational and integrative biology, cutaneous biology, human genetics, medical imaging, neurodegenerative disorders, regenerative medicine, reproductive biology, systems biology, transplantation biology and photomedicine.

Cassandra Aviles | EurekAlert!
Further information:
http://www.massgeneral.org/

More articles from Health and Medicine:

nachricht Researchers release the brakes on the immune system
18.10.2017 | Rheinische Friedrich-Wilhelms-Universität Bonn

nachricht Norovirus evades immune system by hiding out in rare gut cells
12.10.2017 | University of Pennsylvania School of Medicine

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Neutron star merger directly observed for the first time

University of Maryland researchers contribute to historic detection of gravitational waves and light created by event

On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...

Im Focus: Breaking: the first light from two neutron stars merging

Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.

Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....

Im Focus: Smart sensors for efficient processes

Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).

When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...

Im Focus: Cold molecules on collision course

Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.

How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...

Im Focus: Shrinking the proton again!

Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.

It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ASEAN Member States discuss the future role of renewable energy

17.10.2017 | Event News

World Health Summit 2017: International experts set the course for the future of Global Health

10.10.2017 | Event News

Climate Engineering Conference 2017 Opens in Berlin

10.10.2017 | Event News

 
Latest News

Osaka university researchers make the slipperiest surfaces adhesive

18.10.2017 | Materials Sciences

Space radiation won't stop NASA's human exploration

18.10.2017 | Physics and Astronomy

Los Alamos researchers and supercomputers help interpret the latest LIGO findings

18.10.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>