Associations between Food Security Status and Dietary Inflammatory Potential within Lower-Income Adults from the United States National Health and Nutrition Examination Survey, Cycles 2007 to 2014 - 24/05/18
, Mari Palta, PhD, Stephanie A. Robert, PhD, MSW, Lawrence M. Berger, PhD, MSW, Deborah B. Ehrenthal, MD, MPH, Kristen M. Malecki, PhD, MPHAbstract |
Background |
Evidence suggests both that chronic inflammation mediates the association of food insecurity with adverse health outcomes and that diet may be a significant source of inflammation among food insecure individuals.
Objective |
To examine whether food security status is associated with dietary inflammatory potential.
Design and participants |
Cross-sectional data came from the National Health and Nutrition Examination Survey (NHANES), cycles 2007 to 2014 (n=10,630). The analysis sample is representative of noninstitutionalized US adults with an income-to-poverty ratio ≤3.00.
Main outcome |
Dietary Inflammatory Index (DII) score, calculated using the average of two 24-hour dietary recalls, was the main outcome measure.
Statistical analysis |
Type III F tests or χ2 tests compared population characteristics by food security status, defined using the US Food Security Survey Module. Multivariable linear regression was used to estimate the association between food security status and the DII score and moderation by demographic factors. Survey weighting procedures accounted for the effects of stratification and clustering used in the NHANES study design.
Results |
When accounting for socioeconomic status, demographic factors, and health status, DII score was higher at greater levels of food insecurity (P=0.0033). Those with very low food security had a 0.31 (95% CI=0.12 to 0.49) higher DII score than those with high food security. Age moderated the association between food security status and DII score (interaction P=0.0103), where the magnitude of the association between DII score and severity of food insecurity was higher for those >65 years than for younger age groups.
Conclusion |
Food security status may be associated with dietary inflammatory potential, which is hypothesized to play a role in multiple chronic health conditions. Further research is needed to determine the causal nature of this relationship and evaluate how best to implement programs designed to address health disparities within food insecure populations.
Le texte complet de cet article est disponible en PDF.Keywords : Dietary inflammatory potential, Food insecurity, Social determinants of health, Chronic systemic inflammation, Socioeconomic health disparities
Plan
| STATEMENT OF POTENTIAL CONFLICT OF INTEREST No potential conflict of interest was reported by the authors. |
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| FUNDING/SUPPORT Funding that supported R. S. Bergmans’ work on this research comes from the National Institute of Health (NIH) Eunice Kennedy Shriver National Institute for Child Health and Development (NICHD) Training Grant (Demography and Ecology): T32 HD007014. K. M. Malecki’s work on this research was supported by the Center for Demography and Ecology at the University of Wisconsin–Madison (P2C HD047873), the Collaborative Center for Health Equity Administration (WPP3086), the NIH, the National Center for Advancing Translational Science CTSA award UL1TR000427, and the National Institute for Minority Health and Health Disparities award 1P60MD0003428. None of these funding sources had any role in study design; collection, analysis, or interpretation of data; writing the report; or the decision to submit the report for publication. The other authors have no funding sources to report that supported work on this manuscript. |
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| AUTHOR CONTRIBUTIONS R. S. Bergmans designed this study with contribution from K. M. Malecki. R. S. Bergmans analyzed the data with contribution from K. M. Malecki and M. Palta. R. S. Bergmans interpreted results with contribution from K. M. Malecki, M. Palta, S. A. Robert, L. M. Berger, and D. B. Ehrenthal. R. S. Bergmans wrote the first draft with contribution from K. M. Malecki. All authors contributed to critical revision of subsequent drafts and approved of the final version. |
Vol 118 - N° 6
P. 994-1005 - juin 2018 Retour au numéro
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