W. MumtongP. PongsumpunI. Ming TangKing Mongkut's Institute of Technology LadkrabangKasetsart UniversityMahidol University2018-11-092018-11-092014-01-01Far East Journal of Mathematical Sciences. Vol.93, No.2 (2014), 243-266097208712-s2.0-84914698419https://repository.li.mahidol.ac.th/handle/20.500.14594/34146© 2014 Pushpa Publishing House, Allahabad, India. Menstrual cycle is the tissue that peeled off from the lining of the uterus. It is caused by changes in female hormones associated with ovulation. Obesity often affects the balance of estrogen hormone, hormone for ovulation control that may cause menstrual abnormalities. If there is no ovulation, then there would be no menstruation occurs. This article has examined the above factors that affect the balance of hormones on the control of the ovulation cycle.Mahidol UniversityMathematicsArticleSCOPUS