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Dietary Reference Intakes for Energy: An overview of evidence in the 2023 report and appropriate applications

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Anna Maria Siega-Riz, Susan Barr



Anna Maria Siega-Riz, PhD
Susan Barr, PhD


Dietary Reference Intakes (DRIs) are nutrient standards that provide an important scientific underpinning to nutrition policy and practice. Canada and the United States have collaborated since the mid-1990s to provide joint support for developing the DRI values. The DRI values for macronutrients (energy, protein, fat, carbohydrate and fibre) were last published in 2002 and are prioritized for review. As part of this review, the U.S. and Canadian governments asked the National Academies of Sciences, Engineering, and Medicine (NASEM) to convene an expert committee to examine the evidence and recommend updated Estimated Energy Requirements (EERs) for their populations.

This webinar will provide an overview of the 2023 report on DRIs for Energy, including the review of evidence, derivation of the updated EERs, and appropriate applications of the EERs to dietary assessment and planning.

Dr. Anna Maria Siega-Riz will describe the work undertaken by the NASEM Committee on DRIs for Energy to assess human nutrient requirements for energy and the evidence for relationships between energy balance or imbalance and health outcomes.

Dr. Susan Barr will  present on the applications of the EERs and how these differ from the  applications of DRIs for other nutrients.


Moderator: Krista Esslinger, MSc, RD 


Anna Maria Siega-Riz, Ph.D., M.S.
Dr. Siega-Riz’s research focuses on the first 1,000 days of life by understanding the influence of maternal nutritional status (e.g. weight status, dietary patterns, and food/eating behaviors) in the etiology of various pregnancy outcomes, including but not limited to, gestational diabetes, preterm birth, neonatal size, and inadequate or excessive gestational weight gain as well as early childhood health outcomes such as childhood obesity, and neurocognitive and metabolic outcomes. She has been involved in the National Institutes of Health (NIH) funded Hispanic Community Health Study/Salude of Latinos Cohort in the U.S. since 2007. Other research interests include examining the determinants and consequences of food insecurity and the implications of food policy on health outcomes. 

Dr. Siega-Riz currently serves on the NIH’s Council of Councils, National Academies of Sciences, Engineering, and Medicine’s Health and Medicine Division Advisory Committee, the Food and Nutrition Board, and as a board of trustees member for the International Food Information Council. She chaired the Dietary Reference Intakes for Energy for the National Academy of Medicine, Food and Nutrition Board and has previously she served on the 2015 Dietary Guidelines Federal Advisory Committee; the National Heart, Lung, and Blood Institute Advisory Council; the U.S. Department of Agriculture/U.S. Department of Health and Human Services Pregnancy Technical Expert Committee, B–24-month Project; as well as many other Institute of Medicine committees. Dr. Siega-Riz has received several accolades for her work including the March of Dimes Agnes Higgins Award for Maternal and Fetal Nutrition and the American Public Health Association, Food and Nutrition Mary Egan Award. She held key positions at the University of North Carolina at Chapel Hill Gillings School of Public Health, including Associate Dean for Academic Affairs; Program Leader of the Reproductive, Perinatal and Pediatric Program in the Department of Epidemiology and at the University of Virginia as the Associate Dean for Research in the School of Nursing.

Dr. Siega-Riz holds a B.S.P.H. from the University of North Carolina School of Public Health, an M.S. (Master of Science). in Food, Nutrition, and Food Service Management from the University of North Carolina at Greensboro, and a Ph.D. in Nutrition with a minor in Epidemiology from the University of North Carolina School of Public Health. She held the credentials of a registered dietician from 1983–2014.


Susan I. Barr, Ph.D., F.D.C.
Dr. Susan Barr is a Professor Emeritus of Food, Nutrition and Health at the University of British Columbia. Her research interests relate to how women’s cognitions about food, eating, and body weight may have physiological implications for their health. She has also done work examining dietary practices and nutrient adequacy. Dr. Barr has published over 200 articles in peer-reviewed journals, and has been a member of a number of Editorial Boards. She was involved in the development of the initial Dietary Reference Intakes as a member and Chair of the Subcommittee on Interpretation and Uses of DRIs, and subsequently served on the Committee on Development of Guiding Principles for the Inclusion of Chronic Disease Endpoints in Future Dietary Reference Intakes.  Most recently, she was a member of the NASEM Committee on Dietary Reference Intakes for Energy.  Dr. Barr received her PhD in human nutrition from the University of Minnesota, and has received several awards for teaching, research and service including being named as a Fellow of Dietitians of Canada. In retirement, she now has time to explore other passions, including long-distance cycling, learning to figure skate and learning to speak French.

Original Source: "CNS Education Webinars" Wednesday, April 3, 2024

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Length: 1:01:14

Type: File

Last Updated: April 4, 2024

Name Type
Dietary Reference Intakes File
Uses of DRI for Energy File
Dietary Reference Intakes for Energy_Recording Video
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