Dr.I.Kombluch: mounted experiments at Northeastern Hospital, and at the Frankford Hospital in Philadelphia where he was able to report that 63% of patients suffering from hay fever or bronchial asthma “have experienced partial or total relief” from negative ion therapy.

Dr.J.R.Minehart, Northeastern’s chief surgeon, and his associate
Dr. T.A. David tried negative ions in relief of deep, post-operative pain.
During an eight-month test period they exposed 138 patients to negative ions on the first and second days after surgery.

Dr Felix Sulman, Head of the Applied pharmacology Department at ions on a cross-section of people. His subjects were two groups of men and women between twenty and sixty-five. When left for about and hour in a room that contained an overdose of positive ions they became irritable and fatigued. Yet the same people confined for the same period of time, in air containing and overdose of negative ions, showed a pattern of brain waves that suggested increased alertness and relaxation. He tested their alertness and work capacity by various means. All of them scored significantly higher, during and immediately after, their exposure to increased levels of negative ions.

Dr.Krueger discovered that cigarette smoke slows down the cilia, impairing their (cilia s) ability to clear foreign, and possibly carcinogenic (cancer-inducing) substances from the lungs. While positive ions worsened this condition, negative ions were found to reverse the effects of the smoke.