Adolescent pregnancy is associated with increased risks of obstetric complications (anemia, preeclampsia, and delivery problems) and adverse perinatal outcomes such as low birth weight, prematurity, and neonatal death. Specific health interventions, including nutritional supplementation, counseling, health education, and groupbased antenatal care (ANC), have been proposed to mitigate these risks.This study aimed to identify and analyzethe impact of specific health interventionsincluding nutritional supplementation, counseling, group ANC, and health educationon obstetric and perinatal outcomes in adolescent pregnancies through a systematic literature review (SLR).This review followed the PRISMA 2020 framework, encompassing four stages: identification, screening, eligibility, and inclusion. Articles were searched from Scopus and Google Scholar using defined keywords. Of 241 records identified, 41 fulltext articles were reviewed, and 7 met the inclusion criteria (quantitative studies or systematic reviews evaluating specific interventions among pregnant adolescents).Nutritional supplementation, particularly iron and folic acid, effectively reduced anemia and improved birth weight. Counseling and health education enhanced adolescents’ knowledge, attitudes, and ANC compliance. Group ANC models reduced low birth weight and preterm birth while promoting social support.Specific health interventions significantly improve obstetric and perinatal outcomes among adolescent pregnancies. Further experimental studies with rigorous designs are needed to strengthen causal evidence. 

Tantri Wenny Sitanggang is a lecturer and researcher at the Faculty of Health Sciences, Universitas Ichsan Satya, Indonesia. Her research interests focus on maternal and child health, adolescent reproductive health, midwifery education, health promotion, and evidence-based healthcare interventions. She has actively participated in academic research and scientific publications related to maternal health outcomes, reproductive health services, and public health programs. Her current work emphasizes improving maternal and neonatal outcomes through innovative health interventions, health education, and community based approaches. She is committed to advancing midwifery science and contributing to the development of evidence informed policies and practices that support women's health across the life course.