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Source of severe morning sickness in pregnant women found: Study

Written By : Niveditha Subramani |Medically Reviewed By : Dr. Kamal Kant Kohli Published On 2023-12-18T16:19:12+05:30  |  Updated On 19 Dec 2023 12:44 PM IST
Source of severe morning sickness in pregnant women found: Study
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Nasuea in pregnacy is century long symptom that is beared by all women who are expecting. It's common for pregnant women to experience some degree of morning sickness, but a smaller subset have severe, potentially debilitating nausea and vomiting-and now a new study has pinpointed the likely source of it.

The study findings were published in the journal Nature on Dec. 13.

Around 70% of women experience typical morning sickness, but only around 0.3% to 2% suffer from hyperemesis gravidarum. The condition can be debilitating, the study authors wrote, making it difficult for pregnant women to eat, drink and participate in daily activities.

A research team led by the University of Cambridge in the U.K. found that one specific hormone-GDF15-is the culprit behind hyperemesis gravidarum, which is a condition that causes intense morning sickness during pregnancy.

Among 120 pregnant women who participated in the research, the half who experienced nausea and vomiting were found to have "substantially higher" levels of GDF15 than the half who had little or no morning sickness.

"We have securely established, for the first time, using well-validated immunoassays and large sample sizes, that GDF15 levels in maternal blood are significantly higher in women who report vomiting in pregnancy, or have a diagnosis of hyperemesis gravidarum, compared to women who report no or low levels of nausea or vomiting," said study co-author Stephen O’Rahilly, a metabolism researcher at the University of Cambridge.

GDF15 is produced primarily by the fetus during early pregnancy. Some women are more sensitive to the hormone, putting them at a higher risk of developing severe morning sickness.

The hope is that this finding will enable more treatment options for women suffering from hyperemesis gravidarum, researchers said.

"We now have a clear view of what may cause this problem and a route for both treatment and prevention," said O’Rahilly.

Women who had higher levels of GDF15 before getting pregnant were significantly less likely to develop severe sickness, the study found naturally only 5% of them developed the condition compared to 60% of the general population.

With this in mind, one potential remedy would be to administer the hormone to high-risk women before pregnancy to allow them to acclimate to it and prevent severe symptoms.

"Our data tentatively suggest that a doubling of pre-pregnancy GDF15 levels would reduce hyperemesis gravidarum risk by 50%," said O’Rahilly.

"There is considerable overlap between symptomatic and asymptomatic women, so GDF15 levels alone cannot be responsible for determining who is and who is not affected, nor can it be used as a diagnostic test for hyperemesis gravidarum," said O’Rahilly.


Naturemorning sicknesspregnancy
Source : Nature
Niveditha Subramani
Niveditha Subramani

    MSc. Neuroscience

    Niveditha Subramani a MSc. Neuroscience (Faculty of Medicine) graduate from University of Madras, Chennai. Ambitious in Neuro research having worked in motor diseases and neuron apoptosis is interested in more of new upcoming research and their advancement in field of medicine. She has an engrossed skill towards writing and her roles at Medical dialogue include Sr. Content writer. Her news covers new discoveries and updates in field of medicine. She can be reached at editorial@medicaldialogues.in

    Dr. Kamal Kant Kohli
    Dr. Kamal Kant Kohli

    Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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