Health literacy, nutrition literacy, and B vitamins status in patients with recurrent ischemic heart disease episodes: A hospital-based cross-sectional study

Background: In Oman, ischemic heart disease (IHD) is the most common type of cardiovascular disease, and there are multifactorial causes, including nutritional deficiencies of B vitamins (folate and B12) and health illiteracy. Objective: This study aimed to characterize the health literacy, nutrition literacy, and B-vitamin (folate and B12) status of patients with recurrent episodes of IHD. Methods: This cross-sectional study was conducted over a period of 5 months from February to June 2022. The enrolled study participants had an angiographically proven recurrence of IHD, and they were interviewed using a study questionnaire to identify their sociodemographic data, health status, and nutrition status. Folate and B12 were measured in the sera of the study participants. Results: Most participants were in their middle age (62%), and the frequency of the IHD recurrence was noticed among men, married, and unemployed. The serum values of folate and vitamin B12 were within the normal range among the IHD patients. Health literacy categories were affected by the employment status (χ 2 1 = 6.05, P = 0.01), and the binary logistic regression confirmed the statistical significance between employment status and health literacy (odds ratio; 1.7, P = 0.005). Nutrition literacy had a significant difference regarding the education variable (χ 2 1 = 8.34, P = 0.004), and the sociodemographic variables were not associated with nutrition literacy. Conclusion: The investigated health and nutrition literacy measures might be used for assessing IHD patients’ literacy and detecting any deficits that needed to be improved.