Objective: Interpersonal counseling led by dietitians, based on empirical knowledge about behavioral change processes, is particularly effective in the treatment of hypertension. However, there are limitations that raise doubts about the accessibility of dietary counseling for everyone, tailored to their specific needs. Our goal was to demonstrate that a well-chosen telemedicine method can effectively support dietary education. Design and method: Participants with hypertension received dietary advice based on the principles of the DASH diet and underwent regular blood pressure measurements for a period of 3 months. Their measured values and dietary logs were recorded in an application synchronized with a dietetic software. Using the software, the parameters logged by the patients (calories, fiber, sodium, potassium) were analyzed in detail based on the blood pressure values. Results: Our results will demonstrate that the introduction of a properly selected telemedicine method can assist patients in adopting a lifestyle change, providing timely and effective care. Significant improvements were observed in energy and nutrient intake, indicating the effectiveness of education, as patients, due to their increased knowledge, consciously chose healthier diets. As a result, the systolic values decreased on average by 13.35 mmHg, and the diastolic values decreased by an average of 11.7 mmHg during the course of the study. Conclusions: A dietary approach targeting blood pressure modification should be an important strategy in the prevention of cardiovascular diseases. Extensive literature confirms that various dietary components and numerous diets can influence blood pressure. The strongest evidence for lowering blood pressure or preventing high blood pressure through dietary intervention is in favor of DASH and the Mediterranean diet, and there are clear benefits to higher potassium intake, limiting sodium, and increasing fiber consumption.