AbstractBackground and aimPremenstrual syndrome is defined as repetition of physical, psychological and behavioral changesduring the luteal phase of the menstrual cycle which interfere with daily activities and interpersonalrelations. In fact, This syndrome is one of the most common problems of females in theirproductive ages. Having this syndrome may changes energy and macronutrients Intake around themenstruation time. This study was conducted to evaluate the role of premenstrual syndrome (PMS)in energy and macronutrients intake of female students of nutrition and food industrial faculty inTehran, Iran.Method and materialsA cross sectional design was used. The sample of the study consisted of 92 female students innutrition major. Data were collected by using 5 questioners (Demographic status, primary diagnosisof premenstrual syndrome, menstrual calendar, Beck test and food recall) which were completed byself-report. The diet records were analyzed for total energy and macronutrients. Data were analyzedby SPSS 16 statistical software.ResultsWe found that 58.7% of participants suffered from premenstrual syndrome. In affected group theaverage intake of energy and macronutrients was significantly greater in luteal phase compared tofollicular phase (P<0/05). Also there was a significant difference in the average of energy andcarbohydrate intake between 2 groups in the follicular phase which was statistically significant forfat intake between 2 groups in the luteal phase (P<0/05). There was no difference in the averageintake of energy and macronutrients between 2 phases in non PMS group.ConclusionEnergy and macronutrients intake in cases suffering from PMS was higher in luteal phase compareto follicular phase.Keywords : Premenstrual syndrome, Luteal phase, Follicularphase, Energy, MacronutrientREFERENCES-Abtahi HR et al (2005). [Danforth's Obstetrics and Gynecology]. Tehran, Noor danesh publishing.(Persian)-Alavi AR et al (2001). 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