Effects of Curcuma longa (turmeric) and curcumin on the premenstrual syndrome and dysmenorrhea: A systematic review

Premenstrual syndrome (PMS) and dysmenorrhea, in addition to harming the physical and mental health of women, also disrupt their daily life and quality of life. We aimed to investigate the effects and underlying mechanisms of Curcuma longa (turmeric) and curcumin on PMS and dysmenorrhea. PRISMA guideline 2020 was followed for conducting this systematic review. Comprehensive literature searches were conducted across multiple databases, including PubMed, EMBASE, Web of Science, and Scopus. Finally, 17 articles were found after considering the study's inclusion and exclusion criteria into account. Data were extracted and entered into an Excel file for further investigation and drew the results. Curcuma longa and curcumin affect PMS and dysmenorrhea through various mechanisms. They inhibit the activity of cyclooxygenase-2 (COX-2) and the production of prostaglandins, thus reducing inflammation and pain. Additionally, curcumin's antioxidant properties protect against oxidative stress, and lipid peroxidation helps maintain hormonal balance, exert analgesic effects, and relieve the symptoms of PMS and dysmenorrhea. They also insert neurotransmitter modulatory properties, such as increased serotonin and dopamine levels, which may contribute to their antidepressant, and sedative effects. Curcuma longa and curcumin indicated promising therapeutic effects in reducing PMS and dysmenorrhea symptoms due to their anti-inflammatory and antioxidant effects. Although, further well-designed clinical trials are needed to establish their efficacy and optimal dosage.