What are people really eating? The relation between energy intake derived from estimated diet records and intake determined to maintain body weight.

摘要: Two hundred sixty-six free-living human volunteers, 21-64 y old, were trained by dietitians to record daily their food intake for at least 7 d. Subsequently, they fed diets of conventional foods adjusted in amounts maintain body weight greater than or equal 45 Comparing estimated energy with the determined yielded mean differences 2365 and 1792 kJ (565 428 kcal) men women, respectively, representing an underreporting 18%. Twenty-two individuals (8%) overestimated 29 (11%) accurate within 419 (100 maintenance requirement. The remaining 215 (81%) reported habitual 2930 +/- 1586 (700 379 below that subsequently as These findings suggest caution interpretation food-consumption data.