Akbag, Nuran Nur AyparTokat, Merlinda Alus2026-04-252026-04-2520250739-93321096-4665https://doi.org/10.1080/07399332.2025.2597240https://hdl.handle.net/11486/8375The authors' purpose in this study was to examine the effects of web-based Gestational Diabetes Mellitus (GDM) education on person's health management self-efficacy, treatment modality, and maternal-fetal-neonatal outcomes. We conducted a randomized controlled trial design. The study was conducted in 65 pregnant women (intervention group: 31, control group: 34). The level of health management self-efficacy was significantly higher in pregnant women who received web-based education compared to the control group. In addition, fewer pregnant women transitioned from nutrition therapy to insulin compared the control group. Among pregnant women with GDM, web-based education proved to be an effective intervention strategy, enhancing self-efficacy, promoting healthier behaviors, and ultimately reducing maternal and neonatal complications.The clinical trial registration number: NCT05141929.eninfo:eu-repo/semantics/closedAccess#BAŞV!Article10.1080/07399332.2025.2597240414128252-s2.0-105025570215Q2WOS:001644461700001Q30000-0002-4693-2896