There's multiple studies that directly contradict the author's theory but none that support it. His theory is that early peanut butter exposure increases risk o

There's multiple studies that directly contradict the author's theory but none that support it. His theory is that early peanut butter exposure increases risk of developing a peanut allergy due to some batches containing a peanut fungus. Here are studies showing the opposite - that early exposure to peanut butter decreases the likelihood of developing a peanut allergy: LEAP trial: Early peanut consumption (via peanut butter/Bamba) reduced allergy by 81% at age 5. LEAP On: Protection persisted even after a year of avoidance. LEAP Trio: Protection lasted into adolescence (only 4.4% developed allergy). CHOP 2025 study: Population level allergy diagnoses dropped after guidelines encouraging early peanut introduction, which was primarily in the form of peanut butter. [1] https://www.nih.gov/news-events/nih-research-matters/providing-lasting-protection-peanut-allergy https://www.nih.gov/news-events/nih-research-matters/providi... [2] https://www.niaid.nih.gov/news-events/introducing-peanut-infancy-prevents-peanut-allergy-adolescence https://www.niaid.nih.gov/news-events/introducing-peanut-inf... [3] https://www.chop.edu/news/childrens-hospital-philadelphia-researchers-observe-significant-reduction-diagnosis-food https://www.chop.edu/news/childrens-hospital-philadelphia-re...