Food Insecurity Among Older Adults: 10-Year National Trends and Associations with Diet Quality

Abstract

Background/objectives: Food insecurity has emerged as a critical health issue for older adults. Food insecurity has been shown to disrupt healthy eating patterns, but these associations have not been widely studied among older adults. The objectives of the present study were to: (1) examine national trends in food insecurity across a 10-year period, and (2) evaluate the associations between food insecurity and multiple diet quality indices in a recent and nationally representative sample of adults aged 60 or older.

Design: Cross-sectional analysis of the 2007-2016 National Health and Nutrition Examination Surveys.

Setting: Nationally representative sample of the United States.

Participants: The analytic sample was comprised of 5,097 adults aged 60 or older, with household incomes at or below 300% of the federal poverty level.

Measurements: Household food security was measured using the 18-item US Household Food Security Survey Module. Diet was assessed using two 24-hour dietary recalls. Multivariate linear and logistic regression models examined the associations between household food security and three evidence-based diet quality indices, adjusting for sociodemographic and health characteristics.

Results: Across the 10-year period, food insecurity increased significantly from 5.5% to 12.4% among older adults; this increase was more pronounced among lower-income older adults. From the linear regression models, food insecurity was associated with lower scores on the Healthy Eating Index (β = -1.90, 95% confidence interval (CI) = -3.70, -0.09), the Alternate Healthy Eating Index-2010 (β = -1.47, 95% CI = -2.51, -0.44), and the Mediterranean Diet Score (β = -0.54, 95% CI = -1.06, -0.01) after multivariate adjustment. Further adjustment for the presence of chronic medical conditions did not attenuate these results.

Conclusion: Food insecurity is associated with lower overall diet quality among older adults, supporting the need for clinical efforts to identify those at risk of food insecurity and public health efforts to alleviate food insecurity and promote healthy eating behaviors among older adults.

Keywords: National Health and Nutrition Examination Surveys; diet quality; food insecurity; healthy eating patterns.