Fetuses make a protein that causes morning sickness in pregnancy
Desensitizing people to the protein before pregnancy or blocking its action may help
![A woman with long dark hair wearing a white T-shirt holds her right hand over her mouth while her left hand braces her against the wall. The image conveys nauseousness.](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2023/12/122023_ti_morning_sickness_feat.jpg?fit=1030%2C580&ssl=1)
Nausea and vomiting are common during pregnancy. Researchers have found a major driver of the illness, which can sometimes be severe enough to require hospitalization.
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