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Objective: To identify and analyze studies published in the literature that researched adverse perinatal outcomes in live births to adolescent and adult mothers. Methods: The electronic databases PubMed and VHL (LILACS and MEDLINE) were consulted, using the MeSH descriptors with Boolean operators were used, which were grouped as follows: (“maternal age”) AND (“risk factors”) AND (“Pregnancy Complications OR “Adverse Birth Outcomes” OR “Perinatal outcome”). This analysis resulted in eight articles published between 2018 and 2022. Results: Studies presented a strong association between young maternal age (<20 years) and unfavorable neonatal outcomes, such as low birth weight, premature delivery, need for oxygen therapy and admission to the Neonatal Intensive Care Unit. No significant data were found on adverse outcomes in pregnancies in the optimum age range (20>35 years). Conclusion: The analyzed studies point to a strong association between young maternal age and some clinical-obstetric complications.

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