Inflammatory bowel disease (IBD) raises the risk pregnant women will give birth to a small or premature baby, according to a new analysis.
Researchers compared data on 3,907 women with IBD (either Chron's disease or ulcerative colitis) with that of 320,531 controls.
Women with IBD were 1.87 times more likely to have a premature birth, and more than twice as likely to have a baby with low birth weight or congenital abnormalities.
IBD, particularly Chron's disease, also increased the risk of a Caesarean section 1.5-fold.
The authors conclude that women with IBS should be regarded as a high-risk group during pregnancy.
Gut (2006) Online Publication. DOI:10.1136/gut.2006.108324