Scientists identify main cause of extreme nausea and vomiting in pregnancy

Photo credit: Senivpetro via Freepik. Article by Sophie Berdugo. Live Science – April 20, 2026. Research article: Nature Genetics.

An extreme form of nausea and vomiting during pregnancy is linked to 10 genes, one of which is likely the main culprit behind the condition, according to the largest genetic study of its kind to date. Most people experience some degree of nausea and vomiting during early pregnancy, but up to 10.8% have symptoms so severe that they stop being able to eat and drink and may even require hospitalization. This condition, called hyperemesis gravidarum (HG), can […]

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