Objective: To evaluate adherence to non-pharmacological treatment of hypertension by comparing biochemical, clinical, anthropometric, and dietary parameters before and after three health educational and nutritional strategies. Methods: This longitudinal clinical trial included 212 hypertensive individuals who met the inclusion criteria. The participants were allocated to three groups to assess the impact of monthly intervention methods over twelve months. Results: Waist circumference decreased significantly in all groups. Weight and body mass index decreased significantly in Groups 2 and 3. Blood glucose, total cholesterol, and low-density lipoprotein cholesterol decreased significantly in Groups 1 and 2. The interventions also reduced the mean per capita intakes of oil, sugar, and salt in all groups. Conclusion: Educational interventions promoted adherence to non-pharmacological treatment of treatment of hypertension evidenced by anthropometric (weight, body mass index, and waist circumference), biochemical (blood glucose, total cholesterol, and low-density lipoprotein cholesterol), and dietary (meanper capita intake of oil, sugar, and salt) parameters.