How does the acidity of an infant's stomach compare to that of an adult?

The acidity of an infant's stomach is significantly lower compared to that of an adult. This difference is primarily due to the immaturity of an infant's digestive system, which includes lower production of gastric acid (hydrochloric acid). As infants develop, their stomach acid levels increase, and by the time they reach childhood, their acid levels become more similar to those of adults.

The lower acidity in infants makes their stomach environment less hostile toward pathogens, which is a protective factor in their developing immune systems. However, it also means that infants may be more prone to certain gastrointestinal issues, as the lower acid levels can impact digestion and the breakdown of food. This understanding is crucial for caregivers when considering feeding practices and the timing of introducing solid foods.