Diabetes Mellitus (DM) is a chronic disease characterized by increased blood glucose levels due to metabolic disorders. One of the factors that may affect blood glucose instability in patients with type 2 DM is dietary patterns, particularly the consumption of fast food, which is generally high in fat, sugar, and salt. This study aims to determine the relationship between fast food consumption and blood glucose instability among patients with type 2 DM enrolled in the Prolanis program at Purbaratu Public Health Center. This research employed an observational analytic design with a cross-sectional approach. The study population consisted of all type 2 DM Prolanis patients, with a total of 57 respondents selected using purposive sampling. The research instruments included a questionnaire on fast food consumption patterns and blood glucose test results. The findings revealed a significant relationship between fast food consumption and blood glucose instability in type 2 DM Prolanis patients at Purbaratu Public Health Center (p-value = 0.000 < α = 0.05). In conclusion, a higher level of fast food consumption is associated with a higher risk of blood glucose instability among patients with type 2 DM. This study is expected to serve as a reference for healthcare providers in delivering nutritional education and encouraging type 2 DM patients to reduce fast food consumption.
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