Understanding PH
The concept of the acidity or alkalinity of your body - or of water - is based on the pH scale. So it’s necessary to have a basic understanding of what pH is.
PH is simply a measure of the concentration of hydrogen ions. In fact, the acronym “pH” is short for “potential of hydrogen.” The higher a liquid’s pH, the fewer free hydrogen ions it has; the lower its pH, the more free hydrogen ions it has. One pH unit reflects a tenfold change in ion concentration - for example, there are ten times as many hydrogen ions available at a pH of 7 than at a pH of 8 [ii].
The pH scale goes from 0 to 14, and a pH of 7 is neutral.
Anything with a pH below 7 is considered acidic, with battery acid being the most extreme example, around 1. Anything with a pH above 7 is alkaline (or basic), with lye at the top of the scale, around 13. [iii]
Natural water on our planet ranges in pH from 6.5 to 9.0, depending on surrounding soil and vegetation, seasonal variations and weather, and even time of day responses to sunlight. Human activities further influence the pH of our water, from the barrage of toxic industrial pollutants.
The kidneys maintain acid-base homeostasis by regulating the pH of the blood plasma. Gains and losses of acid and base must be balanced. The study of the acid-base reactions in the body is acid base physiology.
Buffering agents
Any substance that can reversibly bind hydrogen ions is called a buffering agent. They function to impede any change in pH. Hydrogen ions are buffered by extracellular (e.g., bicarbonate, ammonia) and intracellular buffering agents (including proteins and phosphate)."
Acid - Base Balance
Our body works optimally at a pH (the degree of acidity or alkalinity) of 7.35 to 7.45. Maintenance of the pH between these levels is necessary to keep the body's various metabolic reactions in good working order. If the pH falls below 7.35 it can lead to acidosis, coma and death. If the pH rises above 7.45, the condition is called alkalosis. It can give rise to hyper-irritability of nerves, resulting in spasms and convulsion and even death.
Acid Accumulation
Proponents of the theory that acid build-up in the body causes cancer lay blame on the food we eat. Red meats, soda, most processed foods and fried foods are highly acidic in nature. Apart from the consumption of these foods, a number of energy-producing reactions in the body form acids as a by-product. According to this theory, this acid accumulates in the body tissues, affecting the normal pH of the body.
