From what my first OB told me, it is a hormonal condition (not NECESSARILY genetic) where your ovulate at LEAST twice per cycle. You may have some variation, no O one cycle, three or four eggs another. Hyper Ovulation is what causes non-fertility treatment septuplets, or anything above triplets with one set of identical twins. 0-2 eggs per cycle is normal, more is considered hyper ovulation.
But I can't find ANY info about IUDs and hyper ovulation, or even anything more than a basic definition. Anyone?