Losing weight for baby: Mom's obesity linked to extreme preemies - NBC News.com

Losing weight for baby: Mom's obesity linked to extreme preemies - NBC News.com: Women with a body-mass index between 30 and 35 were 58 percent more likely than those at a healthy weight to deliver an extremely premature baby, a team of U.S. and Swedish researchers found after examining the medical and delivery records of 1,599, 551 Swedish moms.