Abstract
Premenstrual syndrome is a prevalent disorder affecting a large number of women in their reproductive ages. Nutritional importance of zinc has been known for a long time and studies have shown that zinc can positively affect psychological disorders. The aim of this study was to evaluate the effects of zinc supplementation on quality of life and sleep quality of young women diagnosed with premenstrual syndrome. This randomized, double-blind, placebo-controlled trial was carried out on 60 young university women that were allocated into two groups of intervention who took 30mg/day of elemental zinc or placebo for three months. Pre- and post-intervention, participants completed the questionnaires of quality of life and Pittsburgh sleep quality. After supplementation, quality of life score in the intervention group was increased (+ 9.185 ± 7.29, P < 0.001), however, in comparison with the control group, results were not significant; Physical aspects of quality of life score were significantly enhanced (+ 5.55 ± 3.71 vs. + 0.13 ± 2.87, P < 0.001). Sleep quality was marginally improved just in the zinc group (- 1.48 ± 4.12, P = 0.07). Zinc supplementation for 12weeks had beneficial effects on physical aspects of quality of life in young women with premenstrual syndrome.
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