Includes bibliographical references and index.

Overview of nutritional epidemiology -- Foods and nutrients / Walter C. Willett and Laura Sampson -- Nature of variation in diet -- 24-hour recall and diet record methods / Tom Baranowski -- Food frequency methods -- Reproducibility and validity of food-frequency questionnaires / Walter Willett and Elizabeth Lenart -- Recall of remote diet -- Biochemical indicators of dietary intake / Rob M. Van Dam and David Hunter -- Anthropometric measures and body composition / Walter Willett and Frank Hu -- Assessment of physical activity in nutritional epidemiology / Frank Hu -- Implications of total energy intake for epidemiologic analyses -- Correction for the effects of measurement error -- Issues in analysis and presentation of dietary data -- Genetics in dietary analyses -- Nutrition monitoring and surveillance / Tim Byers and Rebecca L. Sedjo -- Policy applications -- Vitamin a and lung cancer / Walter Willett and Graham Colditz -- Dietary fat and breast cancer -- Diet and coronary heart disease -- Folic acid and neural tube defects / Walter C. Willett and Elizabeth Lenart -- Future research directions.