The National Health and Nutrition Examination Survey (NHANES) are terminally and irrevocably flawed according to an analysis conducted by exercise scientist and epidemiologist Edward Archer from the Arnold School at the University of South Carolina that was published in the peer reviewed journal Public Library of Science on Oct. 9, 2013.
NHANES is supposed to be the most comprehensive set of health data and nutrition information ever collected on children and adults in the United States and represents 40 years of tax funded investment by the Centers for Disease Control and Prevention (CDC).
The researchers examined data from 28,993 men and 34,369 women between 20 and 74 years of age from NHANES I (covering 1971 to 1974) through NHANES (covering 2009 to 2010) and looked at the caloric intake of the participants and their energy expenditure predicted by height, weight, age and sex.
The major defect is the number of calories ingested does not equal the energy expended based on the self-reported data.
The majority of people involved in the studies from NHANES could not live on the amount of food they claim to eat daily. The greatest deficit in caloric reporting was found to occur in people who are overweight or obese. The misrepresentation of caloric intake ranged from 25 percent to 41 percent.
The researchers conclude that “The nation's major surveillance tool for studying the relationships between nutrition and health is not valid. It is time to stop spending tens of millions of health research dollars collecting invalid data and find more accurate measures."