Food insecurity partially mediates associations between social disadvantage and body composition among older adults in india: Results from the study on global AGEing and adult health (SAGE)

Joshua M. Schrock, Heather H. McClure, J. Josh Snodgrass, Melissa A. Liebert, Karen E. Charlton, Perianayagam Arokiasamy, Nirmala Naidoo, Paul Kowal

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Objective: Our objective was to test whether food insecurity mediates cross-sectional associations between social disadvantage and body composition among older adults (aged 50+) in India (n = 6556). Methods: Adjusting for key sociodemographic and dietary variables, we examined whether markers of social disadvantage (lower educational attainment, lower household wealth, belonging to a disadvantaged caste/tribe, and belonging to a minority religion) were associated with food insecurity. We then examined whether food insecurity, in turn, was associated with anthropometric measures of body composition, body mass index (BMI), and waist circumference (WC). We also tested whether food insecurity mediated the relationship between social disadvantage and body composition. Results: In adjusted models, lower household wealth [lowest quintile (Q5) vs highest quintile (Q1): odds ratio (OR) = 13.57, P <.001], having less than a high-school education (OR = 2.12. P <.005), being Muslim (OR = 1.82, P <.001), and being in a scheduled caste (historically marginalized) (OR = 1.49, P <.005) were associated with greater food insecurity. Those who were severely food insecure had greater odds of being underweight (OR = 1.36, P <.01) and lower odds of high WC (OR = 0.70, P <.01). Mediation analyses estimated that food insecurity explained 4.7%–29.7% of the relationship between social disadvantage and body composition, depending on the variables considered. Conclusions: Our results are consistent with the hypothesis that food insecurity is a mechanism linking social disadvantage and body composition among older adults in India. These analyses contribute to a better understanding of processes leading to variation in body composition, which may help enhance the design of interventions aimed at improving population nutritional status.

Original languageEnglish (US)
Article numbere23033
JournalAmerican Journal of Human Biology
Volume29
Issue number6
DOIs
StatePublished - Nov 1 2017
Externally publishedYes

Keywords

  • body mass index
  • caste
  • food insecurity
  • religion
  • waist circumference

ASJC Scopus subject areas

  • Anatomy
  • Ecology, Evolution, Behavior and Systematics
  • Anthropology
  • Genetics

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