A recent study suggests that a surge of a hormone made by fetuses triggers the stomach-turning nausea and vomiting of morning sickness. The research, published in Nature, indicates that people with naturally low levels of the protein in their blood before pregnancy are more susceptible to a severe form of morning sickness known as hyperemesis gravidarum when hit with the rush of protein.

The study sheds light on the underlying causes of morning sickness, a common condition experienced by up to 80 percent of pregnant individuals in the early stages of pregnancy. Approximately half of them experience vomiting, often referred to as morning sickness. However, up to 3 percent of pregnant individuals may develop hyperemesis gravidarum, a severe condition that can lead to weight loss, dehydration, and even hospitalization and death of the fetus or mother.

The findings of the study could potentially aid in identifying individuals at risk of developing severe morning sickness and pave the way for the development of targeted treatments. This research may offer hope for the future by providing insights into potential preventive measures or interventions for pregnant individuals at risk of hyperemesis gravidarum.

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