Ayla Azzura, Teuku Bertha Firdana, Nurhannas Sura Bimanta Sitepu and Fathurrahman Simatupang 2025. CASE STUDY: THE EFFECT OF HEALTHY EATING PATTERNS ON STUDENTS’ LEARNING CONCENTRATION. MEDALION JOURNAL: Medical Research, Nursing, Health and Midwife Participation. 6, 1 (Feb. 2025), 18–21. DOI:https://doi.org/10.59733/medalion.v6i1.168.