Featured Research

from universities, journals, and other organizations

Extreme Nausea And Vomiting Varies Among Pregnant Women From Different Countries

Date:
April 26, 2008
Source:
Norwegian Institute of Public Health
Summary:
Mothers born in India and Sri Lanka are three times more likely to suffer from extreme nausea and vomiting in pregnancy than ethnic Norwegians. Earlier studies reported that 90 percent of pregnant women experience some degree of nausea and vomiting, whereas 0.5 to 2 percent have extreme nausea.

Mothers born in India and Sri Lanka are three times more likely to suffer from extreme nausea and vomiting in pregnancy (hyperemesis gravidarum) than ethnic Norwegians. This finding comes from Norwegian Institute of Public Health’s study of 900, 000 first-time pregnancies registered in the Medical Birth Registry of Norway over a forty year period.

Earlier studies reported that 90 percent of pregnant women experience some degree of nausea and vomiting, whereas 0.5 to 2 percent have hyperemesis gravidarum. Due to dehydration, loss of important electrolytes, malnutrition and weight loss, hyperemesis gravidarum could be life-threatening for mother and baby if left untreated. In the USA it is the commonest cause for hospitalisation during early pregnancy. The cause of hyperemesis gravidarum is unknown.

Åse Vikanes, specialist in gynaecology and obstetrics at the institute’s Division of Epidemiology, wanted to explore whether the mothers’ country of birth affected the prevalence of hyperemesis gravidarum. Vikanes is primary author of the paper “Variations in prevalence of hyperemesis gravidarum by country of birth: A study of 900, 074 pregnancies in Norway, 1967-2005.”

Large study on hyperemesis gravidarum

Vikanes and her colleagues collected data from the Medical Birth Registry of Norway, which since 1967 has recorded data on all pregnancies and pregnancy complications. 8, 300 cases of hyperemesis gravidarum were recorded out of 900, 000 pregnancies, giving an overall prevalence of 0.89 percent. Data on the mother’s country of birth and education were recorded by Statistics Norway and linked to pregnancy information through the mother’s unique personal identification number. Socio-demographic factors such as marital status, country of birth, education, age and number of foetuses in each pregnancy were also studied.

“This is one of the largest studies carried out on hyperemesis gravidarum. In contrast to earlier studies we tested the quality of the data and therefore have confidence in our findings” says Vikanes.

Mothers born in India and Sri Lanka had the highest prevalence of hyperemesis gravidarum, followed by those born in Africa (excluding North Africa) and Pakistan by 3.2 percent, 3.1 percent and 2.1 percent, respectively. Ethnic Norwegians, North Americans and Western Europeans had the lowest prevalence by 0.9 percent, 0.9 percent and 0.8 percent, respectively. Maternal age between 20-24 years old, being married, carrying a female foetus or more than one foetus were all socio-demographic characteristics associated with a higher prevalence of hyperemesis gravidarum.

Need to study further

“The difference in prevalence of hyperemesis gravidarum related to the mother’s country of birth cannot be explained by differences in socio-demographic characteristics”, says Vikanes. “We have to look for other explanations such as genetic factors, a change of diet or a history of infections. This topic needs further research to identify ways to prevent this life-threatening and distressing condition.”

Journal reference: Vikanes A, Grjibovski AM, Vangen S and Magnus P. (2008) Variations in prevalence of hyperemesis gravidarum by country of birth: A study of 900, 074 pregnancies in Norway 1967-2005.  Scandinavian Journal of Public Health 36: 135-142.


Story Source:

The above story is based on materials provided by Norwegian Institute of Public Health. Note: Materials may be edited for content and length.


Cite This Page:

Norwegian Institute of Public Health. "Extreme Nausea And Vomiting Varies Among Pregnant Women From Different Countries." ScienceDaily. ScienceDaily, 26 April 2008. <www.sciencedaily.com/releases/2008/04/080425102414.htm>.
Norwegian Institute of Public Health. (2008, April 26). Extreme Nausea And Vomiting Varies Among Pregnant Women From Different Countries. ScienceDaily. Retrieved September 16, 2014 from www.sciencedaily.com/releases/2008/04/080425102414.htm
Norwegian Institute of Public Health. "Extreme Nausea And Vomiting Varies Among Pregnant Women From Different Countries." ScienceDaily. www.sciencedaily.com/releases/2008/04/080425102414.htm (accessed September 16, 2014).

Share This



More Health & Medicine News

Tuesday, September 16, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

President To Send 3,000 Military Personnel To Fight Ebola

President To Send 3,000 Military Personnel To Fight Ebola

Newsy (Sep. 16, 2014) — President Obama is expected to send 3,000 troops to West Africa as part of the effort to contain Ebola's spread. Video provided by Newsy
Powered by NewsLook.com
Man Floats for 31 Hours in Gulf Waters

Man Floats for 31 Hours in Gulf Waters

AP (Sep. 16, 2014) — A Texas man is lucky to be alive after he and three others floated for more than a day in the Gulf of Mexico when their boat sank during a fishing trip. (Sept. 16) Video provided by AP
Powered by NewsLook.com
Ivorians Abandon Monkey Pets in Fear Over Ebola Virus

Ivorians Abandon Monkey Pets in Fear Over Ebola Virus

AFP (Sep. 16, 2014) — Since the arrival of Ebola in Ivory Coast, Ivorians have been abandoning their pets, particularly monkeys, in the fear that they may transmit the virus. Duration: 00:47 Video provided by AFP
Powered by NewsLook.com
Study Links Male-Pattern Baldness To Prostate Cancer

Study Links Male-Pattern Baldness To Prostate Cancer

Newsy (Sep. 16, 2014) — New findings suggest men with a certain type of baldness at age 45 are 39 percent more likely to develop aggressive prostate cancer. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins