This acidity is crucial for:
* Digesting food: The acidic environment helps break down food and activate digestive enzymes.
* Killing bacteria: The high acidity kills most harmful bacteria ingested with food.
* Facilitating nutrient absorption: The acidic environment promotes the breakdown of proteins and other nutrients, making them easier to absorb.
It's important to note that this pH can vary slightly depending on factors like diet, age, and health.