As many know the stomach is highly acidic in order to digest the food we eat. The stomach pH value is maintained at around 4. If we eat and drink alkaline food and water, the pH value inside the stomach goes up. When this happens a feedback mechanism in the stomach detects this causing the stomach wall to secrete hydrochloric acid into the stomach to bring the pH value back down to 4. As more alkaline food and water is consumed more acid is produced.
The cells in our stomach wall must produce hydrochloric acid instantly as needed. To do this carbon dioxide (CO₂), water (H₂O) and sodium Chloride (NaCl) or Potassium Chloride (KCl) are required. When combined together they produce Hydrochloric Acid (HCl) and a by-product called Sodium Bicarbonate (NaHCO³) or Potassium bicarbonate (KHCO³) which goes into the blood stream. These bicarbonates are the alkaline buffers that neutralise excess acids in the blood. They dissolve solid acid wastes into liquid form. As they neutralise the acidic wastes, carbon dioxide is released as a by-product which is discharged through the lungs.
After the food in the stomach is digested it moves the small intestine where the pH needs to be raised to avoid damaging the intestine wall. To do this the pancreas produces alkaline pancreatic juice. This juice is essentially sodium bicarbonate and is mixed with the acidic food coming out of the stomach. In order to produce bicarbonates the pancreas also produces hydrochloric acid as a by-product which goes into our blood stream. If we consume acidic food and drinks the stomach can become more acidic with no ability to raise the pH and no bicarbonates are produced to neutralise excess acids in the blood.
As the human body ages the alkaline buffers reduce, (a condition known as acidosis) lowering our ability to dispose of the bodies waste products, one of main causes of ageing. These solid wastes build up in the body in the form of cholesterol, fatty acid, kidney stones, phosphates etc, causing ageing.
If we just look at the pH value of the stomach it seems drinking alkaline water has no benefit to the body, however when you look at whole body, there is a net gain of alkalinity that greatly benefits our health and well being.
Alkaline water is not a medicine to cure disease however if consumed regularly it will gradually reduce the accumulated acid wastes. Other benefits include declines in blood sugar levels, improvements in liver function, ulcers, hypertension, hypotension and allergic disorders such as asthma, urticaria, rhinitis and atopic dermatitis.