Tracking dietary trends involves collecting data on what populations eat over time. This can be achieved through various methods, including:
Food Frequency Questionnaires (FFQs): These are comprehensive surveys that ask individuals how often they consume specific foods and beverages. 24-Hour Dietary Recalls: Participants recall everything they ate and drank in the past 24 hours. Dietary Records or Diaries: Individuals keep a detailed record of their food intake over a specific period. National Surveys: Large-scale surveys such as the National Health and Nutrition Examination Survey (NHANES) provide valuable data on dietary trends.
