If a baby is spitting up because he is full or uncomfortable, he is not likely to get hungry faster afterward, according to Dr. Sahira Askari Long, a pediatrician at Children’s National Health System in Washington, DC. His hunger is often reduced if he is overfed, and he may spit up if there is not enough space to hold the amount given, says Long. However, babies with acid reflux may become hungry right away after spitting up, and eating can reduce discomfort caused by reflux, says Long. Feeding again only helps the pain briefly. Long recommends consulting with a physician if the vomit is forceful or increases in frequency.