Introduction:
 Diabetes Type 1 is among the most prevalent Adenoidal –metabolic disorders in infants and teenagers which causes adverse effects to hypothalamic pituitary - Hypophsis and gonad. Since there have been a few studies about menstrual duration and diabetes type 1, this study focuses on the relationship between Glycosylated Hemoglobin, Body Mass Index, Disease duraruion, Insulin Dosage and Menstrual Duration in Type 1 Diabetic Adolescents. Most studies to date have focused on adults, who have been asked to recall retrospectively their menstrual histories through adolescence.
 Methodology: The data was collected using a questionnaire, interview and bio-physical information. The patients were asked about starting and ending point of bleeding for three menstrual cycles. The HbA1c test was done on every case, for two times in duration of three months.
Results: For HbA1c, mean was 8.31 ± 1.63 percent. Eighth patients (13.79%) had disorders in menstrual duration (menstruation longer than 7 days). None of the cases had primary amenorrhea. Conclusion: There was no significant relation between the variable and duration of menstruation. A prospective study of menstrual duration in adolescences with type 1 diabetes is recommended.