Mothers who gain weight between pregnancies may experience pregnancy complications

September 28, 2006

Weight gain between pregnancies may lead to complications during pregnancy and the delivery period, according to a study published in this week's issue of The Lancet.

The study analysed the interpregnancy body-mass index (BMI) change between the first two consecutive pregnancies in over 150,000 Swedish women, as well as the incidence of maternal and perinatal* complications during the second pregnancy.

The study found that weight gain during the interpregnancy period is strongly associated with major maternal and perinatal complications, even in women who are not medically overweight. It has been shown that a gain of 3 or more BMI units is associated with an increased risk of: pre-eclampsia; gestational hypertension; gestational diabetes; caesarean delivery; stillbirth and large-for-gestational-age births.

The authors said: "Our results... strengthen the argument for a causal relationship between maternal overweight or obesity and adverse pregnancy outcomes."

The public health ramifications of this study are profound; especially considering the current global obesity epidemic (even during the course of the study [1992-2001] the prevalence of overweight and obese pregnant women in Sweden increased form 25% to 36%).

The paper concluded that: "[The results] provide robust epidemiological evidence for advocating weight loss in overweight and obese women who are planning to become pregnant, and to prevent weight gain in the larger population of women with healthy weight."
Contact: Dr. E Villamor, Dept Nutrition, Harvard School Public Health, Boston, MA 02115, USA. T) +1 617 432 1238 or Prof. Sven Cnattingius T) +46 8 524 86190

Notes to editors

Perinatal - the period immediately before and after birth.


Related Pregnancy Articles from Brightsurf:

COVID-19 has a prolonged effect for many during pregnancy
Symptoms for pregnant women with COVID-19 can be prolonged, lasting two months or longer for a quarter of the women who participated in a national study led by UC San Francisco and UCLA.

Relaxed through pregnancy
A group of researchers from Charité - Universitätsmedizin Berlin have been able to show that maternal psychological wellbeing during pregnancy has a positive effect on newborn infants.

Trajectories of antidepressant medication use during pregnancy
In an analysis of women who started pregnancy when taking antidepressant medications, investigators identified three trajectories of antidepressant dispensing during pregnancy: more than half stopped their treatment, a quarter maintained their treatment throughout pregnancy, and one-fifth discontinued it for a minimum of three months and then resumed it during the postpartum period.

Are women using e-cigarettes during preconception and/or pregnancy?
A new study of 1,365 racially/ethnically diverse, low-income pregnant women found that 4% reported e-cigarette use.

A better pregnancy test for whales
To determine whale pregnancy, researchers have relied on visual cues or hormone tests of blubber collected via darts, but the results were often inconclusive.

Cannabis use during pregnancy
The large health care system Kaiser Permanente Northern California provides universal screening for prenatal cannabis use in women during pregnancy by self-report and urine toxicology testing.

Questions and answers about cannabis use during pregnancy
A new study shows that women have many medical questions about the use of cannabis both before and during pregnancy, and during the postpartum period while breastfeeding.

The effect of taking antidepressants during pregnancy
Exposure to antidepressants during pregnancy and the first weeks of life can alter sensory processing well into adulthood, according to research in mice recently published in eNeuro.

Is ivermectin safe during pregnancy?
Is it safe to give ivermectin to pregnant women? To answer this question, researchers from the Barcelona Institute for Global Health (ISGlobal), an institution supported by 'la Caixa,' conducted a systematic review and meta-analysis of studies that reported cases of accidental exposure to the drug among pregnant women.

Going to sleep on your back in late pregnancy
This study looked at whether going to sleep on your back in the third trimester of pregnancy was associated with average lower birth weights.

Read More: Pregnancy News and Pregnancy Current Events is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to