PubMed is a common starting database for health sciences literature reviews, and for some projects, will provide enough journal articles.
Databases index journals and no database includes all journals in all subject areas. If you are unable to find relevant materials in PubMed or, your question focuses on specific aspects of health sciences, you may want to use another database in addition to PubMed. See common sources for health sciences-related questions below; review the A-Z list of databases to see more; or ask a librarian.