The pH of the stomach is acidic, ranging from 1.5 to 3.5. This level of acidity is essential for breaking down food, killing bacteria, and activating digestive enzymes. The stomach's acidity is maintained by the production of hydrochloric acid (HCl) by parietal cells.
The pH of the stomach can fluctuate based on factors like food intake and other physiological conditions. For example, when food enters the stomach, the pH can rise to a level of 6.
Factors influencing stomach pH:
- Food intake: Eating can temporarily increase the pH of the stomach as the food is mixed with gastric juices.
- Medications: Some medications, such as antacids and proton pump inhibitors, can reduce the acidity of the stomach.
- Medical conditions: Conditions like gastritis, ulcers, and GERD can affect the pH of the stomach.
