Every living organism on this planet evolved in an ionised atmosphere. Ions are as essential as oxygen for life. Air, even clean air, which is completely devoid of negative ions cannot support organic life. If the body is receiving an adequate intake of air ions the resulting effect is to optimise the body's operation.

There is a direct correlation between the levels of ions in the air and some key neurohormones that regulate human metabolism. Ions affect lung function: both the uptake of oxygen and ciliary rate. Ions also have a stabilising effect on brain activity as shown by an EEG. In addition, ions, by charging up pollutants in the air (microbes, allergens, dust, etc) clean the air by electrostatic filtration and so reduce the chances of airborne infection.

This graph is the result of a typical independent audit in an office and shows marked reductions in a variety of ailments before and after fitting air ionisers.