Mom's Obesity May Affect Newborn Survival WEDNESDAY, Dec. 3, 2014 (HealthDay News) -- Obesity during pregnancy is linked to an increased risk of newborn death, according to a new study, although the researchers found the risk of an infant dying remains very low. "Even if the risk, relatively speaking, is increased for obese mothers, the actual probability is small," said study lead author Dr. Stefan Johansson, a neonatologist at Karolinska University Hospital in Stockholm, Sweden. For example, he explai...