Mothers' Obesity Linked with Biologically 'Older' Newborns

Babies whose mothers are obese may be biologically "older" than babies whose mothers are a normal weight, a new study from Belgium suggests. Researchers analyzed information from 743 mothers ages 17 to 44, and their newborn babies, using samples of umbilical cord blood obtained from each newborn immediately after delivery. Telomeres naturally shorten as people age, but they don't shorten at the same rate in every person.