Abstract
BACKGROUND: Cancer patients face a costly trade-off between medical care and basic necessities including food. This study aims to explore whether catastrophic health expenditures lead to food insecurity among older cancer survivors in the US. METHODS: Longitudinal study of individuals aged 50 or older who were diagnosed with cancer during 2000-2020 and their follow-up measurements selected from the Health and Retirement Study. Data consists of 2505 cancer survivors and 11,614 person-year observations for an average of 4.6 observations per participant. Catastrophic health expenditures were defined as out-of-pocket costs exceeding 5%, 10%, or 15% of household income. Participants were classified as food insecure if they experienced insufficient access to food due to financial limitations. This study utilized fixed effects ordered logistic regression to implement a within-subject research design. RESULTS: Of the 2505 cancer survivors, 77 (3.1%) were moderately food insecure and 73 (2.9%) were severely food insecure. In ordered logistic regression, all three measures of catastrophic health expenses were associated with a higher odds of food insecurity. These associations were more pronounced for males, ethnic minorities, survivors without college education, those in fair or poor health, retirees, and survivors with below-median income. CONCLUSIONS: The prevalence of food insecurity among older cancer survivors was relatively low, with 6% of the sample experiencing food insecurity. Multivariate regression analyses revealed that a major predictor of food insecurity among older cancer survivors is catastrophic health costs. Given the health benefits of secure food access, older cancer survivors should consult care providers about their financial capacity to afford recommended cancer treatments while maintaining healthy diets. Policymakers should also consider interventions to reduce out-of-pocket financial burden on older cancer survivors, as improved financial security may enhance treatment outcomes and lower cancer-related mortality.