A new study from the Department of Population and Public Health Sciences — in collaboration with University of Cambridge — has confirmed a long-suspected cause for the nausea and vomiting commonly experienced by women during pregnancy. The findings, which appear today in Nature, reveal that a hormone produced by the fetus, combined with the mother’s sensitivity to the hormone, are the culprit.

Now scientists suspect that pre-pregnancy exposure to the hormone might mitigate symptoms in some women.

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