Instead of attempting to assess caloric intake via the National Health and Nutrition Examination Survey, the U.S. government would be better off focusing on energy expended in exercise or stored as fat, said the lead author of a new study. "Ninety percent of the federal government budget for nutrition and obesity research is spent on self-reported energy intake, the 24-hour recalls, which have been demonstrated to be invalid for 20 years," said Edward Archer of the University of South Carolina, Columbia. "NHANES is using a tool that is so inaccurate and so invalid, with the result that everything we say we know about diet is invalid, because it's based on 40 years of pseudoscience."

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