- A 77% reduction in peanut allergy was estimated when peanut was introduced to the diet of all infants, at 4 months with eczema, and at 6 months without eczema. The estimated reduction in peanut allergy diminished with every month of delayed introduction. https://www.jacionline.org/article/S0091-6749(22)01656-6/fulltext 1255 comments science