Preterm birth linked to health problems in adolescence

(Reuters Health) - Adolescents who were born extremely premature are much more likely to have chronic health problems than their peers who were delivered at full term, a Swedish study suggests. 

Pregnancy normally lasts 40 weeks, and babies born after 37 weeks are considered full term. The study focused on extremely preterm infants, delivered at 23 to 25 weeks of gestation. 

Read more at Reuters.