Kyleena is an (IUD) that the hormone levonorgestrel. The hormone is continuously released
and is designed to work by:
- Thinning the lining of the uterus (so that implantation of a live embryo is very unlikely).
- Killing sperm before fertilization.
- Increasing cervical mucus to prevent sperm from reaching the egg.
In December, 2017, a new study was released based upon research with nearly 1.8 million women in Denmark. It was completed over a 10-year period and studied women who were either using the birth control pill, an implant, or IUD’s (intrauterine devices). The conclusion was that these birth control methods can increase the chance of breast cancer by 38% (when the chemical progestin is dispersed as part of the method and when the woman has used birth control for over 10 years).