Consumers Largely
Underestimating Calorie Content of Fast Food
People
eating at fast food restaurants largely underestimate the calorie content of
meals, especially large ones, according to a new article.
From
2006 to 2010 many American states and cities passed laws requiring chain
restaurants to print calorie content on menus. The US Patient Protection and
Affordable Care Act of 2010 included a provision that will require all
restaurant chains with more than 20 US sites to print calorie content on menus.
Previous
research has shown that adults and children underestimate calorie content often
by large amounts. However, these studies did not monitor consumer choices at
restaurants or focused on a narrow range of fast food restaurants or
individuals.
Researchers therefore carried out a large cross sectional study of repeated visits to fast food restaurant chains in 89 restaurants across the New England region of America: McDonald's, Burger King, Wendy's, KFC, Subway and Dunkin' Donuts. At the time of data collection, none of the chains routinely printed calorie content on menus.
Researchers
enrolled a diverse group of adults (>18 years old), adolescents (aged 11-20)
and school age children (3-15 years old). They collected receipts from
participants to calculate the calorie content of their meals, and they
administered a short questionnaire which included a question asking
participants to estimate the calorie content of their meal.
Parents provided answers for the school age children. The final sample size was 1877 adults, 1178 adolescents and 330 school age children.
Parents provided answers for the school age children. The final sample size was 1877 adults, 1178 adolescents and 330 school age children.
Among
adult participants, 65% were either overweight or obese, as were 34% of
adolescents and 57% of school age children. Less than one quarter of
participants reported noticing calorie information in the restaurants, and less
than 5% reported using it to help them choose their meal.
The
mean calorie content of meals was 836 for adults, 756 for adolescents and 733
for children. On average, adults, adolescents, and parents of school-age
children underestimated calorie content by 175 calories, 259 calories and 175
calories, respectively.
Two thirds of all participants underestimated the calorie content of their meals with approximately one quarter underestimating the calorie content by at least 500 calories.
Participants consuming high calorie meals underestimated by a greater amount than small calorie meals. Underestimation was greater among Subway diners than at any other chain. Adults and adolescents eating at Subway underestimated by 20% and 25% more than those at McDonald's.
Two thirds of all participants underestimated the calorie content of their meals with approximately one quarter underestimating the calorie content by at least 500 calories.
Participants consuming high calorie meals underestimated by a greater amount than small calorie meals. Underestimation was greater among Subway diners than at any other chain. Adults and adolescents eating at Subway underestimated by 20% and 25% more than those at McDonald's.
The
researchers conclude that adults, adolescents and parents of school age
children generally underestimate the calorie content of meals, especially large
meals and when eating at Subway restaurants. They say that the
"forthcoming calorie menu labeling requirements of the US Patient
Protection and Affordable Care Act might help to correct underestimation of
calorie content."
The
researchers suggest that in addition to providing calories on menus,
policymakers could perhaps improve menu labelling by supporting social
marketing campaigns to better explain the concept of calories.
Story Source:
The
above story is reprinted from materials provided by BMJ-British Medical
Journal.
Note: Materials may be edited for content and length. For further
information, please contact the source cited above.
Journal Reference:
1. J. P. Block, S. K. Condon, K. Kleinman, J.
Mullen, S. Linakis, S. Rifas-Shiman, M. W. Gillman. Consumers'
estimation of calorie content at fast food restaurants: cross sectional
observational study. BMJ, 2013; 346 (may23 3): f2907 DOI: 10.1136/bmj.f2907
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BMJ-British Medical Journal (2013, May 23). Consumers largely
underestimating calorie content of fast food. ScienceDaily.
Retrieved May 25, 2013, from http://www.sciencedaily.com/releases/2013/05/130523223825.htm