AMERICAN health experts are and suggesting that junk foods and sodas be packaged with ''exercise labels''to let consumers know exactly how much exercise is required to burn off the calorie and fat content within the products.A can of soda?Fifty minutes of jogging on a treadmill.
Researchers at Johns Hopkins's Bloomberg School of Public Health in the US observed teenagers at stores where signs displayed either calorie counts as a percent of recommended daily calorie intake ,or the time spent jogging that would be needed to burn off the drink.
While all signs led the teenagers to purchase fewer drinks,researchers discovered that the most powerful influence was the calorie conversion to exercise minutes.For example,a 250-calorie can of soda read that it would take 50 minutes of running to burn off the calorie content.
''People generally underestimated the number of calories in the foods and beverages American Journal of Public Health.
''Providing easily understandable caloric information-particularly in the form of a physical activity equivalent,such as running-may reduce calorie intake from sugar -sweetened beverages and increases water consumption among adolescents.''
To counteract obesity in the US,the Food and Drug Administration has proposed rules that require restaurant and fast food chains to post the calorie content of standard items on their menus.The rules also apply to vending machines,coffee shops,and conveniences and grocery stores,although not to movie theatres,bowling alleys,and airliners.
No comments:
Post a Comment