Flinders University Sep 3 2025 A new study reveals the profound emotional and physical toll of extreme morning sickness, with more than half of affected women reporting they considered terminating their pregnancy, and 9 in 10 saying they had thought about not having more children. The national survey, published in PLOS ONE , is one of the most comprehensive investigations into the lived experience of hyperemesis gravidarum (HG)-a severe form of nausea and vomiting in pregnancy – in Australia.