This study is designed to investigate the effect of a nutrition program supported by digital content on heart function in patients who have experienced a heart attack with ST-elevation. Participants will receive personalized dietary guidance and digital support materials for three months. The main goal is to determine whether this digital support materials can improve heart pumping function (measured by left ventricular ejection fraction). Participation involves following the dietary program and undergoing heart function measurements at the beginning, after one months and after three months.

Inclusion Criteria:

• Individuals aged 19-65 who have fully completed the voluntary consent form
• Being of normal weight (BMI 18.5-24.9 kg/m²) or obese (30-34.99 kg/m²)
• Having suffered a heart attack with ST elevation (STEMI)
• To be enrolled in the study within the first 72 hours after hospital admission
• To be willing to participate in a follow-up period of at least 3 months

Exclusion Criteria:

• Those who did not sign the voluntary consent form
• Individuals aged over 65
• Weight loss exceeding 5% in the last 3 months
• Those with malignancy, chronic renal failure or severe systemic disease
• Patients unable to complete the questionnaires due to severe cognitive impairment
• Those who have previously received nutrition education or eating awareness training

Echocardiography assessments are performed by a cardiologist blinded to group assignment.