While nothing can be stated definitively, the current research is positive and indicates there is no additional risk to HG mothers. In fact, the review suggests that mother’s with NVP or HG actually have a reduced risk of miscarrying. So, in short - no, hyperemesis gravidarum does not generally cause miscarriage.

Before I became pregnant with my daughter in 2014 I knew nothing about HG. I had heard Princess Kate had been hospitalized for her “bad morning sickness” but really how bad could it be? I was wrong. Very wrong. I got a positive pregnancy test at 5 weeks. My husband I were so excited to start our family. 3 days later the vomiting started. It didn’t stop.

Comparing morning sickness and HG is like comparing a papercut to a bullet wound. Sure, both are things that happen to your body and cause you distress. But the similarities end there. They are part of the same family but more likely distantly related cousins who only catch up at Christmas.