Obesity went up in the US between 2008 and 2009, but in response to questions about year-to-year weight changes, on average, people said they lost weight.
“We all know on some level that people can be dishonest about their weight,” says University of Washington Professor Ali Mokdad.
“But now we know that they can be misreporting annual changes in their weight, to the extent of more than two pounds per year among adults over the age of 50, or more than four pounds per year among those with diabetes.”
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