Relationship Between Food Insecurity and Functional Limitations in Older Adults from 2005-2014 NHANES.

Background: Food insecurity refers to the physical, social, and economic inability to access and secure sufficient, safe and nutritious food. Food insecurity has been found to be associated with poor health status, obesity, and chronic disease. To date, a relationship between food insecurity and functional limitations has not been described in of older adults. Methods: We examined 9309 adults ≥60 years old from the 2005-2014 National Health and Nutrition Examination Surveys (NHANES). Food security was categorized as full, marginal, low, and very low. Functional limitations were assessed as having difficulty in physical, basic or instrumental activities of daily living. Results: Of adults ≥60 years old (mean age: 70.5 ± 0.08, 51% female), the prevalence of full, marginal, low, or very low food insecurity was 7572 (81%), 717 (7%), 667 (8%), and 353 (4%), respectively. The prevalence of any functional limitations was 5895 (66.3%). The adjusted odds (OR [95%CI]) of having any functional limitation in marginal, low, and very low food security levels compared to full food security are: 1.08 [1.02-1.13], 1.16 [1.10-1.22], 1.14 [1.07-1.21], respectively. The association between levels of food insecurity and functional limitation is modified by race/ethnicity. Conclusions: Functional limitation is significantly associated with increasing food insecurity in older adults.