Menstrual cycle rhythmicity: metabolic patterns in healthy women Scientific Reports Many women suffering from irregular menstrual cycles due to PCOS have testified to Glutathione helping them regularize their cycle, bringing it back to its normal rhythm. Do you have a Late again? Can Folic Acid Make Your Period Late? MyConciergeMD 7 Reasons for Late Periods: , 1. Stress Stress can cause a delay in a womans menstrual cycle by disrupting the balance of hormones in the body. The hormone cortisol, which is produced in response