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Changing food consumption patterns/dietary energy balance

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Changing food consumption patterns/dietary energy balance - Presentation by Yves Martin Prevel and Agnes Cartner, Nutripass.
This presentation was given as part of the 'Metrics of Sustainable Diets and Food Systems Workshop co-organized by Bioversity International and CIHEAM-IAMM, November 4th -5th 2014, Agropolis International, Montpellier

Visit 'Metrics of Sustainable Diets and Food Systems' Workshop webpage.
http://www.bioversityinternational.org/metrics-sustainable-diets-workshop/

Published in: Food
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Changing food consumption patterns/dietary energy balance

  1. 1. Changing food consumption patterns/Dietary energy balance Illustrative indicator: Prevalence of overweight and obesity Yves Martin-Prével & Agnès Gartner UMR 204 ‘Nutripass’ Metrics of Sustainable Diets and Food Systems – Expert Workshop
  2. 2. 2 Metrics of Sustainable Diets and Food Systems – Expert Workshop November 4-5, 2014 Outline • Why do we care about overweight/obesity? • How do we assess overweight/obesity? • Where do we find data on overweight/obesity?
  3. 3. Metrics of Sustainable Diets and Food Systems – Expert Workshop November 4-5, 2014 Why do we care about overweight/obesity?
  4. 4. 4 Metrics of Sustainable Diets and Food Systems – Expert Workshop November 4-5, 2014 Because overweight/obesity: • Is globally the 1st risk factor associated to mortality • Accounts for (among others): • 44% of the global burden of diabetes • 23% of the global burden of ischemic heart diseases • 7-41% of the global burden of some cancers (++ colorectal cancer) • Has been growing very rapidly over the past 30 years, firstly in developed countries, then in middle- income countries, now in low-income countries
  5. 5. 5 Metrics of Sustainable Diets and Food Systems – Expert Workshop November 4-5, 2014 Overweight/obesity: - at the centre of chronic diseases models - but not related to the food system only Dietary energy balance
  6. 6. 6 Metrics of Sustainable Diets and Food Systems – Expert Workshop November 4-5, 2014 Total adults: 1,000,000,000 overweight + 500,000,000 obese (+ 43,000,000 overweight children <5y)
  7. 7. Metrics of Sustainable Diets and Food Systems – Expert Workshop November 4-5, 2014 How do we assess overweight/obesity?
  8. 8. 8 Metrics of Sustainable Diets and Food Systems – Expert Workshop November 4-5, 2014 Body Mass Index (BMI): BMI (kg/m²) = weight (kg) / height (m) ² The same index defines both under- and over- weight The same thresholds apply for all adults (≥20y)
  9. 9. 9 Metrics of Sustainable Diets and Food Systems – Expert Workshop November 4-5, 2014 Body Mass Index (BMI): BMI is a crude measure of corpulence meant to represent a condition of excess fat BMI (kg/m²) = weight (kg) / height (m) ² Age Gender Body shape Ethnic group Physical activity Body composition
  10. 10. 10 Metrics of Sustainable Diets and Food Systems – Expert Workshop November 4-5, 2014 BMI cut-off points Asian populations
  11. 11. 11 Metrics of Sustainable Diets and Food Systems – Expert Workshop November 4-5, 2014 BMI has a poor individual predictive value Same BMI different adiposity levels different health risks Because of: -Different ethnic groups -Different body shapes -Different physical activity levels -Different places for excess fat in the body
  12. 12. Metrics of Sustainable Diets and Food Systems – Expert Workshop November 4-5, 2014 Where do we find data on overweight/obesity?
  13. 13. 13 Metrics of Sustainable Diets and Food Systems – Expert Workshop November 4-5, 2014 Data sources • Population-level surveillance • Repeated cross-sectional surveys • Some middle- and high-income countries • Demographic and Health Surveys (and others) • Preschool age children + mothers • All women of reproductive age (and sometimes men) • Middle- and low-income countries • Self-reported data
  14. 14. 14 Metrics of Sustainable Diets and Food Systems – Expert Workshop November 4-5, 2014 WHO Global data base
  15. 15. 15 Metrics of Sustainable Diets and Food Systems – Expert Workshop November 4-5, 2014 Data trends and analysis • Mainly model-based estimates • Some differences between data published by WHO and by IHME (Institute of Health Metrics and Evaluation)
  16. 16. Metrics of Sustainable Diets and Food Systems – Expert Workshop November 4-5, 2014 Thank you for your attention

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