Could major back surgery affect your menstrual cycle?

Yes: Any major surgery alters our bodies stress hormones, such as cortisol and adrenaline. This can alter menses and most typically, the cycle after the surgery will occur off- cycle, and may be heavier or lighter than usual.

Yes: Major spine surgery in menstration women such as scoliosis correction often triggers menstration due to the physiological stress of the surgery. Cycles should normalize a few months afterwards.