#263: Brenda Davy, PhD – Dietary Assessment Methods in Nutrition Research

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Guest Bio

Brenda Davy, PhD, RDN

Dr. Davy, is a Professor in the Department of Human Nutrition, Foods and Exercise at Virginia Tech. She conducts research investigating the role of diet and physical activity behaviors in the prevention and treatment of obesity and related comorbidities, beverage consumption and weight management, and dietary assessment methodologies.

Dr. Davy received a BS in Nutrition in 1989 and an MS in Exercise Physiology in 1992 from Virginia Tech, and a PhD degree in Nutrition from Colorado State University in 2001. Dr. Davy is a Fellow of the American College of Sports Medicine and The Obesity Society, and serves on the Board of Editors for the Journal of the Academy of Nutrition and Dietetics.

Her research has been supported by the National Institutes of Health. To date, she has published more than 100 peer-reviewed journal articles. At Virginia Tech, she directs the Laboratory for Eating Behaviors and Weight Management.

In This Episode We Discuss

  • Self-report measures: diet records (3-4 days), recalls, Food Frequency Questionnaires
  • Limitations of typical self-report measures used in research
  • Social desirability bias
  • Do particular meals/diet habits cause more inaccurate reporting?
  • How do the self-report methods try to minimize the degree of underreporting?
  • Intake biomarkers: Urinary excretion, isotope-based methods, etc.
  • Metabolomics
  • Tech-based methods: wearables, cameras, Remote Food Photography Method (RFPM)

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