The IUD prevents the implantation process that happens when the fertilized egg implants into the uterine wall. There are some different types of intrauterine devices. It is usually effective for 3 to 5 years (variable) and should always be monitored by the doctor and, although it is not common, women that have never had children can have an IUD. It is a very safe method, but it can, at the same time, have some side effects, as it may aggravate menstrual cramps, cause heavier mentrual flows and even increases the chances of getting intrauterine infections. This is why you should always use a condom.
Advantages
Women can expect significant contraceptive efficacy without having to having to involve any other daily effort. With the exception of some specific devices, the IUD is not a hormonal contraceptive method, and is actually indicated for women who have faced difficulties with hormonal contraception.
Disadvantages
In addition to the increasing pain during menstruation and the intensification of its flow, the IUD does not protect against sexually transmitted diseases (STDs). It can cause, in some women cramps and bleeding, regardless the menstrual period. The IUD can also cause infertility, not being recommended for women who have never had children.
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