Introduction: population aging and increasing life expectancy pose challenges in the care of chronic diseases such as diabetes mellitus. Gerontological research and adapted education are essential to address this global problem. Methods: a quasi-experimental study was conducted in diabetic patients over 60 years of age in Argentina, implementing a six-session educational program from October 2020 to February 2021. Knowledge was assessed, ethical principles were respected and confidentiality was guaranteed. Results: predominance of patients aged 60-64 years (42,62 %) and women (63,94 %). Initial inadequate knowledge about hypoglycemia, exercise, foot care and diet improved significantly after the intervention. Importance of attending the elderly population, especially those aged 60-64 years and women. Effectiveness of the educational program on metabolic control and lifestyle changes. Recommendation to expand similar programs in primary care. Conclusions: care of elderly diabetic patients requires a specialized approach, and tailored educational programs are effective in disease management and promotion of positive lifestyle changes. Wider implementation of these programs is recommended to improve patients' quality of life