Women who want to bear children in their 30s and 40s often face a dilemma regarding how much time to wait between pregnancies. Doctors often advise they wait 18 to 24 months. A study Monday in the Journal of the American Medical Association (JAMA), based on 150,000 pregnancies in Canada from 2004 to 2014, concludes that waiting less than a year between pregnancies raises the risks, regardless of a woman’s age.
