Background: Stroke remains a leading cause of mortality and disability among older adults in Indonesia, with a prevalence of 8.3 per 1,000 population. The Mediterranean diet is effective in reducing cardiovascular risk; however, its implementation remains limited due to the lack of innovative and age-appropriate nutrition education media, as well as the absence of integrated approaches combining educational media with digital support.Objectives: To analyze changes in knowledge, adherence to the Mediterranean diet, and fat intake following nutrition education using MediFan StrokeAware and WhatsApp among older adults in Mulyorejo Village.Methods: A pre-experimental one-group pretest–posttest study was conducted among 24 participants aged 45–70 years in Mulyorejo, Malang, selected through purposive sampling. Inclusion criteria included the ability to communicate and use WhatsApp, and no severe health conditions. The 2-month intervention utilized MediFan StrokeAware and WhatsApp (three times/week). Dietary adherence was measured using a validated questionnaire. Data were analyzed using Wilcoxon and paired t-tests (α=0.05).Results: Knowledge increased significantly (68.06% vs 80.56%, p=0.044). Most participants (95.8%) achieved adherence to the Mediterranean diet after the intervention. MUFA intake increased (p=0.013), while SAFA intake also increased (p=0.001) as an unintended outcome. PUFA intake did not change significantly (p=0.141). Body fat percentage decreased significantly (p=0.002).Conclusion: The nutrition education intervention using MediFan StrokeAware and WhatsApp was associated with improvements in knowledge and adherence to the Mediterranean diet among older adults. However, the increase in saturated fatty acid (SAFA) intake indicates that dietary behavior changes were not yet consistent, highlighting the need for more contextual and longer-duration interventions.