Lauren Crosby, MD, FAAP, is a nationally recognized parenting expert and California-based pediatrician. She's currently in private practice at La Peer Pediatrics in Beverly Hills, and is an attending physician at Cedars-Sinai Medical Center. She's board certified by the American Board of Pediatrics and is an official spokesperson for the American Academy of Pediatrics (AAP). Previously chief resident at Cedars-Sinai Medical Center, she earned her medical degree at the UCLA School of Medicine. Crosby also serves as a medical advisor for Bobbie Infant Formula, Trubiotics and Life’s First Naturals.