Objective: The main aim of this study was to find the frequency of menstrual cycle abnormalities which were associated with higher BMI.Study Design: It is a cross sectional type of study.Place and Duration of study: This study was carried out in a duration of 9 months from August 2018 to April 2019 in Gynecology and Obstetrics department of Services hospital Lahore.Materials and Methods: A total of 100 cases which were in fertile group i.e. Age greater than 12 years were included in this study. Inclusion criteria was to have menstrual abnormalities for at least last 3 cycles. Exclusion criteria included patients with bleeding tendencies, abnormalities of uterus and hormonal abnormalities. Body mass index of every patient was calculated and the patients who had BMI greater than 25kg/m2 were labeled as high. Informed consent was taken from all the patients or their relatives. A pre-designed proforma was used to collect the data. Ethical committee approval was taken.Results: There were 100 patients selected for the study. Mean age in our study was 20.21±4.57 years. The mean time period for there were menstrual abnormalities was 7.21±2.34 months. 32% of the patients had raised BMI. 64% were taking treatment for this. The patients who had age of menarche greater than 14 years, incidence of increased BMI was much higher seen in 16 (47. 06%) of cases. Patients who had previous treatment for delayed menstruation also had increased BMI which was seen in 23 (40. 35%) cases.Conclusion: There is high association of menstrual abnormalities with Raised BMI and other factors like delayed menarche and prior treatment for it increases the incidence significantly
