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Morning sickness, also called nausea and vomiting of pregnancy (NVP), is a symptom of pregnancy that involves nausea or vomiting. [1] Despite the name, nausea or vomiting can occur at any time during the day. [ 2 ]
[3] [4] It was introduced as a sedative and medication for morning sickness without having been tested on pregnant women. [5] While initially deemed to be safe in pregnancy, concerns regarding birth defects were noted in 1961, and the medication was removed from the market in Europe that year. [3] [6]
Although described as "morning sickness," pregnant women can experience this nausea any time of day or night. The exact cause of morning sickness remains unknown. Nausea and vomiting in pregnancy is typically mild and self-limited, resolving on its own by the 14th week of pregnancy. Other causes should also be ruled out when considering treatment.
Some 70% of women experience nausea and vomiting during pregnancy, and until now, an underlying cause was unknown. Scientists discover cause of pregnancy morning sickness, test cures Skip to main ...
GDF15—a hormone that exists throughout the body in low levels, but is produced in the placenta at higher levels during pregnancy—is indeed the cause of morning sickness, a new study out of the ...
Researchers also said women with the inherited blood disorder thalassemia, which causes higher levels of GDF15 outside of pregnancy, experienced little to no nausea or vomiting when pregnant.
Nausea or "morning sickness" is common during early pregnancy but may occasionally continue into the second and third trimesters. In the first trimester nearly 80 % of women have some degree of nausea. [9] Pregnancy should therefore be considered as a possible cause of nausea in any sexually active woman of child-bearing age. [8]
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