Researchers at the University of North Carolina Chapel Hill have found a link between nausea and vomiting and a decread risk of spontaneous abortion. According to the research, pregnant women who suffered from nausea and vomiting were less likely to suffer from spontaneous abortion. Unlike previous studies that showed a correlation between nausea, vomiting and spontaneous abortion, researchers involved with this study investigated the duration of symptoms and the effect of duration on spontaneous abortion.
Information was collected from 2,407 participants in three United States cities between the years 2000 and 2004. Interviews, medical records and ultrasound images / reports were used to extract data. After collecting data and grouping participants based on length of time nausea and vomiting was experienced, researchers found a strong connection between how long symptoms were reported and viability of a pregnancy.
According to data results, women who suffered from nausea and vomiting for at least half the pregnancies were less likely to spontaneously abort. The higher the maternal age, the stronger the connection. This means, older women who experience no nausea and vomiting during early pregnancy are in the highest risk group for spontaneous abortion. The risk steadily declined the longer women noted feeling these symptoms.
It is important to note that every pregnancy is different. Just because data concluded a link between nausea and vomiting and viability of pregnancy does not mean every woman will feel these symptoms while pregnant. Some women feel perfectly fine for the entire pregnancy without a single day of nausea and vomiting and still give birth to a healthy fetus.
Source: Ronna L Chan, Andrew F Olshan, David A Savitz, Amy H Herring, Julie L Daniels, Herbert B Peterson, Sandra L Martin. Human Reproduction. 27 August, 2010.