You probably remember peanut butter being everywhere when you were a kid: commercials, birthday parties, packed in your school lunchbox. Now peanuts are notable for their absence. What accounts for such a dramatic change in such a short amount of time? When did something so commonplace become so high-risk? Dr. Gideon Lack led the study that aimed to understand what happened. Today on ParentData, he explains the precipitous rise in peanut allergies over the last twenty years, our own unfortunate role in the rise of allergies, and the best ways to safely introduce allergens to your babies. Read Dr. Lack’s randomized LEAP trial paper in the NEJM and the American Academy of Pediatrics’ subsequent revised recommendations. Subscribe to ParentData.org for ad-free podcast episodes, hundreds of articles on pregnancy and parenting, and more. We need your stories! Click on this form for our upcoming episode themes and instructions on how to contribute your voice. We can’t wait to hear from you.