Conclusion
Intrauterine devices (IUDs) are birth control methods that are inserted into the uterus to suppress the activities of sperm. They are often linked to changes in weight. However, there is no evidence to show that can lead to weight gain or loss. Weight gain experienced in women who have IUDs is mostly caused by other factors, such as aging, lifestyle changes, and diet changes. It is important to speak with your medical doctor if you start to gain weight after inserting an IUD into your uterus. Your doctor will find the right IUD to suit your lifestyle and reproductive plans.
References
[1] https://my.clevelandclinic.org/health/diseases/3929-anemia
[2] https://kidshealth.org/en/teens/vdischarge2.html
[3] https://www.plannedparenthood.org/learn/health-and-wellness/vaginitis
[4] https://www.webmd.com/sexual-conditions/guide/female-pain-during-sex
[5] https://my.clevelandclinic.org/health/diseases/5005-migraine-headaches
[6] https://www.who.int/news-room/fact-sheets/detail/depression