Effect of Omega-3 Fatty Acids on Premenstrual Syndrome: A Systematic Review and Meta-Analysis Publisher Pubmed



Mohammadi MM¹ ; Dehghan Nayeri N² ; Mashhadi M³ ; Varaei S⁴
Source: Journal of Obstetrics and Gynaecology Research Published:2022

Abstract

Introduction: To date, no definitive results have been reported on the effect of omega-3 fatty acids on premenstrual syndrome (PMS). Therefore, this systematic review and meta-analysis aimed to determine the effect of omega-3 fatty acids on PMS. Methods: In this systematic review and meta-analysis, the databases were searched. In this regard, randomized clinical trials investigating the effect of omega-3 fatty acids on PMS were included. The quality of the studies was assessed using the Cochrane Collaboration's Risk of Bias tool. Meta-analysis was done based on random effects model and calculation of standardized mean difference (SMDs). Results: The results of meta-analysis showed that omega-3 fatty acids were efficient in reducing the severity of PMS in women (SMD = −0.968, 95% confidence interval [CI]: −1.471 to −0.464). In addition, the results showed that the studies were heterogeneous (I2 = 89.11%, p <0.001). Based on meta-regression analysis, aging (β = −0.150, 95% CI −0.202 to −0.098, p <0.001) and increasing the duration of intervention (β = −0.579, 95% CI −0.781 to −0.378, p <0.001) had a significant effect on the severity of PMS. We also found that omega-3 fatty acids could significantly reduce the somatic (SMD = −0.800, 95% CI: −1.126 to −0.474) and psychological (SMD = −0.373, 95% CI: −0.686 to −0.061) symptoms of PMS. Conclusion: Omega-3 fatty acids could reduce the severity of PMS. However, we should caution in the conclusion in affirming the beneficial effects of n-3 PUFAs on PMS, since the heterogeneity is evident in the analysis. The efficacy of the treatment was enhanced by increase of the treatment duration. © 2022 Japan Society of Obstetrics and Gynecology.