The significance of peer review in scientific studies lies in its role in ensuring the credibility and validity of research findings. During this process, experts in the field examine a study's methodology, results, and conclusions before publication. This checks and balances system helps prevent the dissemination of erroneous or fraudulent information, fostering scientific integrity. By subjecting research to scrutiny, peer review enhances the quality of scientific literature, guiding future research and informing policy decisions based on credible evidence.