A woman holds up the Thailand's biggest burger weighing more than 6 kilograms, before a competition. File photo/Reuters
Labelling fast-food menu items with calorie counts only leads to a slight, short-term decrease in average calories purchased in the United States, a study published on Thursday found.
And after a year, that effect is mostly diminished.
Researchers gathered data on almost 50 million menu purchases at 104 locations of a fast-food franchise with three restaurant chains in Louisiana, Texas and Mississippi from April 2015-2018.
During the last year of the study period, the menu items included labels with calorie counts.
In the months following the addition of labels, customers bought on average 60 calories less than before the calorie counts were included. Notably, about 40 of those calories were attributed to side dishes (including desserts).
But after a year, the average calories per transaction had reduced to only 23 calories less than before labelling.
The trend "could have occurred if customers initially responded to the novelty of calorie labels but stopped noticing them over time," the study suggested.
Two other possibilities are that customers decided to purchase healthier items with a similar calorie count; or that restaurants started adapting their recipes as time went on, offering lower calories.
But the study did not examine either of these potential explanations, author Joshua Petimar said.
"What this shows us is that calorie labelling alone is not a solution in itself," said Amelia Lake, a registered dietitian and professor in public health nutrition at Teesside University.
"Obesity is a complex condition and therefore needs a multifaceted approach to tackle it."
Small changes still 'meaningful
Authors of the study, published in the BMJ journal, said that although the calorie reduction was low, it could still help adults to lose about half a kilo (one pound) over three years.
"Although the results of this study might be disappointing to some, small changes to calorie intake can have meaningful effects at the population level," wrote Asha Kaur of the Centre on Population Approaches for Non-Communicable Disease Prevention at the University of Oxford in an editorial.
About 29 percent of adults in England were classified as obese in 2019, an increase of three percent since 2016, according to the NHS.
In the United States, where almost 40 percent of the population is obese, the food and Drug Administration began requiring that large food chains include calorie information on menus as of May 2018.
"Research suggests that food eaten out of the home is less healthy than food we consume at home, so calorie labelling would be a positive step," Kaur said.
Forty-one percent of British adults between the ages of 19 and 29 eat out once a week, almost double that of other age groups, according to a 2015 study.
New research suggests the compound responsible for chilli’s heat could help slow the spread of lung cancer, the leading cause of cancer death for both men and women.
Vegetarians have a 22% lower chance of being diagnosed with coronary heart disease, compared to meat eaters. Pescatarians, those who eat fish, but no meat, have a 13% reduced risk.
Young kids, who grow up in homes with limited access to nutritious foods are more likely to experience poor overall health and developmental problems, says a new study.
Biryani is a popular and wonderful rice dish of South and East Asia. This dish is prepared by mixing some special spices, meat and rice.
Amid the subtle hints of racism that still exists, Harmony Anne-Marie Ilunga, a Congolese model in Hong Kong, looks forward to better days.
Tree Canopy Lab will collect aerial imagery from cities and use AI to ascertain where tree plantation is required. The tool makes it easier for cities to measure, plan and reduce carbon emissions, temperature and pollution.