Trending in Japan: IUDs as viable contraception

One of the most prominent issues regarding reproductive rights in Japan is that there aren’t many choices for female contraception. In a country where male condoms are the most common contraception method, the use of birth control pills and IUDs lags behind international standards.

When Japanese model Tsubasa Masuwaka shared her first Mirena experience on her YouTube channel, her video went quickly viral. Mirena is one of the most common types of intrauterine devices (IUD) used in Japan.

In this article, we dive into some important facts about Mirena.

How do IUDs work?

An IUD is a small, T-shaped device placed into the uterus to prevent pregnancy, and it can be made of either plastic or copper. In Japan, the former is known as Mirena and the latter as NovaT. They both prevent pregnancy by stopping sperm from reaching and fertilizing eggs.

What are the pros and cons of IUDs?

One of the biggest advantages of using Mirena devices is that they are 99% effective in preventing pregnancy. It can be effective for up to five years. The insertion of a Mirena device must be done by a medical professional. The use of a condom is still encouraged to prevent STDs. However, Mirena can be a great alternative for those who have difficulties keeping up with their birth control dosing schedule. Mirena also accommodates those aged over 40 years old, as well as smokers and overweight people, who aren’t often recommended to use birth control pills.

Furthermore, Mirena benefits those who suffer from heavy cramps and menstrual discharge. This is because Mirena works to thin the lining of the uterus, which reduces menstrual blood flow and cuts down cramps.

There is a chance that the IUD can cause cramps and bleeding after the installation procedure. These effects tend to subside once your body gets used to the device. You are often required to visit the doctor’s office regularly to make sure the IUD is positioned appropriately.

Another drawback to using Mirena is the cost. Currently, the cost of Mirena can be covered by national health insurance only when the patient is acknowledged to suffer from heavy menstruation. If covered, the cost can be a little bit over 10,000 yen, but if not, it can cost over 40,000 yen. However, while the up-front cost may be high, it works out to be cheaper in the long term when compared with the cost of birth control pills, which can be about 2,000 – 3,000 yen per month.

Knowing your options is the first step

According to the Contraceptive Use by Method 2019 report issued by the United Nations, IUDs are only used by 0.4% of women aged between 15 and 49 years old in Japan. When Masuwaka opened up about her Mirena experience, the comment section was filled with supportive messages from other Mirena users. Additionally, many who learned about this female contraceptive from her video thanked her for this useful information. While social media and influencers are filling the information gap, Japan needs a structural change where women can easily access reproductive support.