Application of the Nutrition Functional Diversity indicator to assess food system contributions to dietary diversity and sustainable diets of Malawian households

Brian G. Luckett, Fabrice A.J. DeClerck, Jessica Fanzo, Adrienne R. Mundorf, Donald Rose

Research output: Contribution to journalArticlepeer-review

Abstract

Objective Dietary diversity is associated with nutrient adequacy and positive health outcomes but indicators to measure diversity have focused primarily on consumption, rather than sustainable provisioning of food. The Nutritional Functional Diversity score was developed by ecologists to describe the contribution of biodiversity to sustainable diets. We have employed this tool to estimate the relative contribution of home production and market purchases in providing nutritional diversity to agricultural households in Malawi and examine how food system provisioning varies by time, space and socio-economic conditions. Design A secondary analysis of nationally representative household consumption data to test the applicability of the Nutritional Functional Diversity score. Setting The data were collected between 2010 and 2011 across the country of Malawi. Subjects Households (n 11 814) from predominantly rural areas of Malawi. Results Nutritional Functional Diversity varied demographically, geographically and temporally. Nationally, purchased foods contributed more to household nutritional diversity than home produced foods (mean score=17·5 and 7·8, respectively). Households further from roads and population centres had lower overall diversity (P<0·01) and accessed relatively more of their diversity from home production than households closer to market centres (P<0·01). Nutritional diversity was lowest during the growing season when farmers plant and tend crops (P<0·01). Conclusions The present analysis demonstrates that the Nutritional Functional Diversity score is an effective indicator for identifying populations with low nutritional diversity and the relative roles that markets, agricultural extension and home production play in achieving nutritional diversity. This information may be used by policy makers to plan agricultural and market-based interventions that support sustainable diets and local food systems.

Original languageEnglish (US)
Pages (from-to)2479-2487
Number of pages9
JournalPublic health nutrition
Volume18
Issue number13
DOIs
StatePublished - Oct 13 2015
Externally publishedYes

Keywords

  • Dietary diversity
  • Indicator
  • Malawi
  • Nutritional functional diversity
  • Sustainability

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Nutrition and Dietetics
  • Public Health, Environmental and Occupational Health

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