If your child has a peanut allergy, and you blame yourself because you heard those peanut-butter-and-jelly sandwiches you ate while pregnant or nursing might have caused it, you can let yourself off the hook. Current evidence does not support the notion that avoiding certain foods during pregnancy or lactation, delaying the introduction of common food allergens into your child’s diet or feeding him soy milk instead of cow’s milk will prevent food allergies, asthma or atopic dermatitis in infants, according to a new clinical report from the American Academy of Pediatrics. Two things that can help: If your child is at risk for allergic disease (if he has a parent or sibling with allergies), exclusive breastfeeding for the first four months of life may prevent cow’s milk allergies, atopic dermatitis or early wheezing associated with respiratory infections. Also, feeding him certain hydrolyzed formulas may help to prevent atopic dermatitis. Meanwhile, it’s one less thing to feel guilty about. Plus, you’re already helping your allergic child by informing his teachers about his allergy, checking all snack labels carefully and finding healthy substitutes for the foods he shouldn’t eat.