Which characteristic is associated with the gastric pH of neonates?

The gastric pH of neonates is typically more alkaline than that of adults, particularly in the first few days of life. This is crucial for understanding the physiological differences in digestion and absorption between neonates and older children or adults.

In neonates, the gastric juices are less concentrated in hydrochloric acid compared to adults, making the pH higher (or less acidic). This physiological characteristic plays a significant role in the digestion of milk, which is the primary source of nutrition for infants. A more alkaline pH can affect the solubility of certain nutrients and medications, therefore impacting their bioavailability and how effectively they are absorbed.

As neonates grow and their digestive systems mature, their gastric pH gradually decreases and becomes more similar to that of adults, typically around the time they begin to eat solid foods. This transition is important for adapting to a more varied diet as well as for the optimal digestion of proteins and other complex nutrients.