Why should new foods be introduced to an infant one at a time?

New foods should be introduced to infants one at a time to monitor for any allergic reactions or sensitivities. This approach allows parents or caregivers to identify which specific food may cause a problem if an adverse reaction occurs. Additionally, introducing foods gradually helps infants develop a taste for a variety of flavors and textures without overwhelming their digestive systems. It also aids in establishing a healthy eating pattern from an early age.