Retraction notice: Effect of curcumin on dysmenorrhea and symptoms of premenstrual syndrome: a systematic review and meta-analysis, (Korean J Fam Med (2024), 45(2), (96–104), (10.4082/kjfm.23.0184))

The article titled “Effect of curcumin on dysmenorrhea and symptoms of premenstrual syndrome: a systematic review and meta analysis” has been retracted by the Korean Journal of Family Medicine due to concerns regarding the integrity of the meta-analy sis [1]. During a post-publication review initiated by a reader’s comment, it was identified that two studies included in the meta-anal ysis—Fanaei et al. [2] and Khayat et al. [3]—may have originated from the same clinical trial (grant number: 574) conducted at Tehran University of Medical Sciences. The following observations raised concerns: Similarity in Baseline Characteristics: The two studies reported identical baseline demographic and clinical data for their participants. Consistency in Participant Flow Diagrams: The participant flow diagrams presented in both studies were found to be also identical. While the authors clarified that the studies focused on different outcomes, no definitive evidence was provided to confirm the independence of the datasets. As a result, the inclusion of these studies as separate data sources in the meta-analysis may have influenced the reliability of the findings. The editorial board, after careful consideration, has concluded that these methodological issues necessitate the retraction of the article to ensure the accuracy and integrity of the published scientific record. This decision does not imply any misconduct on the part of the authors but reflects the journal’s commitment to maintaining rigorous standards in research publication. We appreciate the authors’ cooperation during this review process and apologize to our readers for any inconvenience caused. We also extend our gratitude to the individual who highlighted this matter and contributed to upholding the quality of our journal. © 2025 The Korean Academy of Family Medicine