Endometriosis The Lancet Can Folic Acid Make Your Period Late? MyConciergeMD 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? Gly14] humanin exerts a protective effect against D galactose induced primary ovarian insufficiency in mice Reproductive BioMedicine Online 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