Dysmenorrhea (cramping pain in the lower abdomen that occurs at the onset of menstruation) is one of the most common gynaecological symptoms among adolescents and young women, with the prevalence ranging from 45% to 95%.
In an analysis of four clinical trials which compared the therapeutic efficacy of ginger during the first 3–4 days of the menstrual cycle, a significant effect of ginger in reducing pain in subjects with dysmenorrhea was collectively shown.
Reference:
Daily, J., W., et al. (2015). Efficacy of ginger for alleviating the symptoms of primary dysmenorrhea: a systematic review and meta-analysis of randomized clinical trials. Pain Medicine, vol. 16, iss. 12, 2243–2255.