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.
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