From personal experience with both hormonal and non-hormonal contraception (Pill vs. copper IUD), I suspect the reported aggravation is due to the fact that the Pill reduces said "aggravation", and once you are off the hormones, you feel like it's worse but it's really just back to normal.
In general, when the IUD is installed correctly, the body does not perceive it as a foreign object or try to reject it or move about and puncture holes or increase the levels of copper in the blood or [insert another myth that seems to make intuitive sense but has no scientific or observed basis].
(There is one myth that has near truth to it. The common misconception that you have to have been pregnant to get it. This is not true either - the uterus just has to be big enough to house the IUD comfortably and and it's virtually guaranteed that a post-pregnancy uterus is. However for most pre-pregnancy women this not a problem either, and a size check is the first step during the installation process).
The benefits on the other hand are real, and huge. Reduced risk of hormone-associated cancers, noticeably increased sex-drive, better hair, nails, and skin, not having to take a pill every day, less money, statistically better protection from pregnancy, the list goes on.
In general, when the IUD is installed correctly, the body does not perceive it as a foreign object or try to reject it or move about and puncture holes or increase the levels of copper in the blood or [insert another myth that seems to make intuitive sense but has no scientific or observed basis].
(There is one myth that has near truth to it. The common misconception that you have to have been pregnant to get it. This is not true either - the uterus just has to be big enough to house the IUD comfortably and and it's virtually guaranteed that a post-pregnancy uterus is. However for most pre-pregnancy women this not a problem either, and a size check is the first step during the installation process).
The benefits on the other hand are real, and huge. Reduced risk of hormone-associated cancers, noticeably increased sex-drive, better hair, nails, and skin, not having to take a pill every day, less money, statistically better protection from pregnancy, the list goes on.