It means that the stomach is very acidic.
The stomach has a low pH (is acidic) because of the Hydrochloric Acid (HCL)
Low pH is needed to start the denaturation and digestion of proteins, which occurs in the stomach.
By increase I believe you mean the pH gets more acidic. The stomach is full of acid that is very low on the pH scale, and the lower in the pH scale, the more acidic Hydrogen bonds become. So, basically the more acidic the pH in the stomach, the better the food can be broken down (decomposed).
The stomach (part of the digestive system) has a low pH (acidic), which kills pathogens.
Many bacteria doesn't support a very low pH.
The lower a pH level is, the more acidic it is. The acid in your stomach, hydrochloric, is very acidic, and can even burn through some items.
Bactericidal
Low: acidic.
pH 2This is because pepsin, the primary digestive enzyme found within the stomach, functions optimally at a low pH.
The stomach secretes protease enzymes that work best at a pH of around 2.
A large portion of bacteria, though not all, can not survive in a low pH environment such as stomach acid. The bacteria dies from the corresive nature of low a low pH solution.
A low pH in the stomach helps to activate digestive enzymes and break down food properly for absorption. It also helps to kill harmful bacteria that may be present in the food we eat. Maintaining a low stomach pH is crucial for overall digestive health and nutrient absorption.