What is the reason why menstruation is delayed for a long time

Menstruation is postponed for a long time to consider is due to endocrine dysfunction, mental stress, overwork, gynecological diseases, menstrual eating cold and spicy food caused. It is recommended to go to the hospital to do gynecological examination and hormone six checks. If endocrine dysfunction is caused, need to be under the guidance of a doctor with hormone regulatory drug treatment.