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Previous abortions and exercise: Do they affect pregnancy?
Date:11/11/2008

Women who have had two or more induced abortions have a reduced risk of pre-eclampsia by 60 %. It is not currently understood to what degree physical activity during pregnancy protects against pre-eclampsia, compared to previous studies. This is shown in two new studies from the Norwegian Institute of Public Health (NIPH) that use data from the Norwegian Mother and Child Cohort Study (MoBa).

The new results from MoBa were presented on Friday 7th November at 21st Norwegian Perinatal Days, a conference organised jointly with the 2008 International Stillbirth Conference. The NIPH chaired the conference and many researchers from the NIPH presented research about stillbirth and findings from the MoBa.

Reduced risk for pre-eclampsia among women who have aborted

One study shows that women who have had two or more induced abortions reduced their risk for pre-eclampsia by 60 percent. That is, they are as well protected against pre-eclampsia as women who have previously given birth to a child. Women who have had one termination previously, have an approximately 16 % reduced risk for pre-eclampsia compared with women who have never had an abortion. There was no protective effect linked to having had a miscarriage previously.

These results are from a new study in MoBa, where the link between previously performed abortions, miscarriages and pre-eclampsia were studied. Information from 20 846 women was studied. All the women were first-time mothers, and some had previously had miscarriages or abortions.

The results indicate that every normal pregnancy, even if it ends before birth, to some degree will protect against pre-eclampsia in a later pregnancy, almost like a vaccination. The mechanisms for this effect are currently unknown, and more research is necessary. Miscarriages do not appear to protect against pre-eclampsia. This could be because pregnancies that end in miscarriage may have deficiencies which mean they c
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Contact: Media contact
info@fhi.no
Norwegian Institute of Public Health
Source:Eurekalert

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