Columbia University researchers Denise B. Kandel and Eric R. Kandel have identified a molecular mechanism underlying nicotine’s gateway effect.

Patients are “getting treatments they may not need or that don’t work, or they’re getting more than they needed,” said Jeffrey Lieberman, psychiatrist-in-chief of Columbia University Medical Center.

Mary D'Alton, MD, chair of obstetrics & gynecology, will be leading a 111-patient clinical trial to test a new device that may prevent mothers from bleeding to death after childbirth.