From PBS NewsHour.

A change in guidance on giving peanuts to babies as young as 4 months old has helped roughly 60,000 children avoid potentially serious allergies. That’s according to a new report out Monday in the medical journal "Pediatrics." Researchers found that allergies in children aged zero to three fell by more than 27 percent after a shift in advice a decade ago. That number jumped to more than 40 percent when the guidance was expanded two years later. The change in guidance upended longstanding recommendations that children not be fed peanuts and other such products until age 3.

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