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Quality assessment summary for studies included in the meta-analysis, evaluated using the Cochrane Risk of Bias 2 tool.

Quality assessment summary for studies included in the meta-analysis, evaluated using the Cochrane Risk of Bias 2 tool.

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Background/Objectives: Primary dysmenorrhea (PD) is a common condition affecting up to 90% of menstruating women, which often results in significant pain without an underlying pathology. Zinc, recognized for its anti-inflammatory and antioxidant effects through inhibiting prostaglandin production and superoxide dismutase 1 (SOD1) upregulation, alle...