(Science) – Studies that use surveys to link dietary patterns to human health may be irredeemably biased, new paper suggests

With the help of a technique that measures people’s energy expenditure, researchers came up with an equation to assess the accuracy of responses in dietary surveys. They found that more than half the records in large, widely used nutritional survey databases like the U.S. National Health and Nutrition Examination Survey (NHANES) are likely wrong due to people underreporting what they consumed. The results call into question the thousands of studies that have used these datasets to link particular diets to human health, the authors claim. (Read More)