Tea and premenstrual syndrome in the People's Republic of China.
We evaluated the hypothesis that tea consumption causes premenstrual syndrome by studying 188 nursing students and tea factory workers in the People's Republic of China via questionnaires distributed in classes (nursing students) or during routine physical examinations (tea factory workers). Analysis of the data revealed that tea consumption is strongly related to the prevalence of premenstrual syndrome and that the effects are dose-dependent.
Rossignol
A M
AM
Department of Health, Oregon State University, Corvallis 97331-6406.
Zhang
J Y
JY
Chen
Y Z
YZ
Xiang
Z
Z
D002110:Caffeine / Q000009:adverse effects*; D002681:China; D004305:Dose-Response Relationship, Drug; D005260:Female; D006801:Humans; D011293:Premenstrual Syndrome / Q000453:epidemiology / Q000209:etiology*; D013662:Tea / Q000009:adverse effects*
D013662:Tea; D002110:Caffeine