IUDs Cause Uterine Adhesions & Infertility?

If you’ve scrolled through your feeds recently, you’ve probably seen the video that’s causing a stir: a prominent infertility doctor sharing her “Hot Take” personal observations on social media, claiming that IUDs are a hidden cause of intrauterine adhesions- or severe uterine scar tissue. Now, Listen. It is completely natural to see a specialist standing in a white coat making a passionate claim and think, "Wow, should I be worried about my birth control?" But here is the reality we need to establish right out of the gate: a handful of individual cases shared online is the very definition of anecdotal evidence. It does not fulfill the criteria of rigorous scientific observation. When we pull back from the algorithm and look at the actual clinical data involving millions of IUD users worldwide, the science shows us something completely different. In fact, large-scale studies demonstrate that IUDs do not cause this scarring—and historically, certain models have actually been used to prevent the uterine walls from sticking together during post-surgical healing. So today, we are separating the scrolling panic from the actual science. We have REA data from the recent FACT (Fertility After Contraceptive Termination) study from 2021 (AJOG). We’re breaking down what the data really says, why the internet loves a medical scare, and the true, proven causes of intrauterine adhesions.

1. Abel MK, Wald K, Cedars MI, Noel M. Uterine Synechiae After Intrauterine Device Use: A Case Series. Journal of Assisted Reproduction and Genetics. 2021.

2. Chung E, Wang F, Zhang J, Strug M, Aghajanova L, Lathi R. The impact of prior hormonal intrauterine device (IUD) use on endometrial lining thickness in the fertility clinic setting: a retrospective cohort study. J Assist Reprod Genet. 2026 Jun 25. doi: 10.1007/s10815-026-03950-x. Epub ahead of print. PMID: 42347902.

3. Peipert JF, Zhao Q, Schreiber CA, Teal S, Turok DK, Natavio M, Cordon S, Daggy J. Intrauterine device use, sexually transmitted infections, and fertility: a prospective cohort study. Am J Obstet Gynecol. 2021 Aug;225(2):157.e1-157.e9. doi: 10.1016/j.ajog.2021.03.011. Epub 2021 Mar 11. PMID: 33716075.