Medical Research on the Effects of Negative Ions:

  • Negative Ions, kill viruses, bacteria and allergens

In the 1930s, a team headed by Professor A. L. Tchijevsky, a Russian professor of astronomy and biophysics, found that negative ions have a purifying effect on the air around them, killing germs and sterilising enclosed air.


  • Negative Ions Elevated mental concentration and performance and help to alleviate Depression, Anxiety and Stress, Enhancing overall health and well-being

Dr Clarence Hansell, an American research engineer who investigated the biological effects of ionised air in 1932 when he noticed that the mood of one of his colleagues changed in response to the ions being generated by their equipment. He discovered that his colleague was ebullient when the machine produced negative ions and morose when it produced positive ions.

Dr Hansell’s performed a controlled study on seasonal affective disorder (SAD), reported in the Archives of General Psychiatry in October 1998, found negatively charged fresh air to be an effective treatment and prevention for depression. Scientists believe this is because negative ions affect the serotonin levels in the brain, less dramatically (and synthetically) than a prescription anti-depressant.

A clinic near Ueyamada Hot Spring in Shinshu, Japan, treated Alzheimer’s patients with negative ion therapy, and more than half were cured of the disease, recovering on their own with no further treatment! Following this, a medical team at Shinshu University also found that negative ions work to heal damaged cells in mice.

According to research conducted by Shiseido, the world renowned Japanese cosmetics company, inhaling air containing 3,200 positive ions per cubic centimeter for 20 minutes resulted in thirst, loss of voice, and nasal congestion due to elevated serum serotonin levels. In contrast, inhaling negative ions for 10 minutes stabilized brain waves, resulting in a sense of calmness. In the group that inhaled negative ions, hardly any serotonin was detected in blood or urine samples. (Negative ions cause the body to convert excess serotonin – the antagonist for most of the problems – into a harmless chemical compound).


  • Negative Ions, help treat respiratory problems such as: Asthma, Chronic Bronchitis, Allergies and Hay-Fever

The following is excerpted from an article by Guy Cramer, entitled “Advanced Research on Atmospheric Ions and Respiratory Problems”:

“A doctor treating burn victims with negative ion generators found that those patients who also had respiratory problems – chronic bronchitis or asthma – all reported that negative ion therapy helped them breathe more easily. With these findings the doctor started research into the effects of ions on respiratory ills. This research was carried out at the Northeastern Hospital, at the University of Pennsylvania’s Graduate Hospital, and the Frankford Hospital in Philadelphia. He found 63% of patients suffering from hay fever or bronchial asthma ‘have experienced partial or total relief’ because of negative ion therapy. One hospital doctor who worked on the project said later, ‘They come in sneezing, eyes watering, nose itching, worn out from lack of sleep, so miserable they can hardly walk. Fifteen minutes in front of the negative ion machine and they feel so much better they don’t even want to leave.'”

“The U.S. experimenters Windsor and Becket gave sixteen volunteers overdoses of positive ions for just 20 minutes at a time and all of them developed dry throats, husky voices, headaches, and itchy or obstructed noses. Five of the volunteers were tested for total breathing capacity, and it was found that a positive ion overdose reduced that capacity by 30 percent. Exposed to negative ions for ten minutes, the volunteers’ maximum breathing capacity was unaffected. What is significant here is that negative ions did not affect the amount of air breathed, but positive ions made breathing more difficult.”

“In Britain, two Oxford University statisticians conducted a study among 100 victims of asthma, bronchitis, and hay fever chosen at random from a list of people who had purchased negative ion generators in the hope that it would help their problems. In the end their report was based on interviews with only 74 of the 100. They found that 18 of 24 asthmatics; 13 of 17 bronchitis sufferers; 11 of 12 hay fever victims; and 6 of 10 people afflicted with nasal catarrh reported that negative ion generators had noticeably improved their condition. A few claimed the generator had cured them.”

“Brazilian Hospitals have commonly used ionizing devices for the treatment of breathing problems, including allergies, following a test involving 36 children with asthmatic allergies. All of them had consistent and in some cases crippling problems before taking negative ion therapy; during the treatment only one of them suffered an allergy attack and afterward all were reportedly cured, at least to the point that they no longer suffered problems so long as they took part in occasional negative ion therapy sessions.”

“In 1966 at a hospital in Jerusalem, doctors performed a series of tests on 38 infants between two and twelve months old. All suffered to about the same degree from respiratory problems. They were divided into two groups of nineteen, one kept as a control group in a ward without any ion charge and the other where a negative ion generator was in use.”

The researchers reported that negative ions without any other treatment – that is, no drugs – seemed to cure attacks of asthma and bronchitis more quickly than drugs, antibiotics included. They also observed that there were none of the ‘adverse side effects’ frequently found when treating such children with drugs. They concluded that the children treated with negative ions were less prone to ‘rebound attacks’ (relapses). As to objectivity, the scientific report said that the tests ‘demonstrated that the atmospheric ions have an effect on infants, especially those suffering from asthmatic bronchitis.’ Less scientifically, they found that babies didn’t cry as often and as loudly when they were breathing negative ions as they did in normal air. And there is nothing subjective about a bawling baby.”

In 1990, Dr John Ott, a US scientist who specialises in attention deficit disorder: “The use of synthetic materials increases the level of positively charged ions in an interior, therefore producing high static electricity. This, in turn, affects the seratonin content of the blood of those who spend time there, which can be linked to headaches and lethargic behaviour.”

  •  Negative Ions speed up recovery from physical exhaustion and illness, increasing metabolism and promoting better digestion

Dr. Tomoh Tsubushi, a medical professor at Tokyo Metropolitan University and sports medicine specialist, has closely followed negative ion research. In 1997, he concluded from his own studies that when negative ion therapy was applied after exercise, it quickly normalized blood pressure, reduced serum serotonin levels, and accelerated recovery time from exhaustion. In 2000, his paper on the beneficial effects of negative ions on the human body was published in Shuki no Kenkyu, a Japanese scientific journal.

Dr Igho Hart Kornblueh, from the University of Pennsylvania, found that negative ions have a sedative, healing and pain-relieving effect. He reported that patients recovered 57 per cent faster from surgery when exposed to negative ions, and treatment with negative ions provided relief from symptoms of hay fever for 63 per cent of patients. Conversely, positively ionised air (such as that from dirty, dry, hot winds and excessive indoor heating) produced headaches, nasal obstruction, dryness of the throat, dizziness and an itching nose.

Dr Kornblueh also found that treatment with negative ions, at a level found in a natural setting, reduced the need for post-operative painkillers.

In 1975, Nanzandoh Medical Clinic in Japan published some astonishing results from their research on negative ion therapy, finding it effective in the treatment of high blood pressure, rheumatoid arthritis, gout, tinnitus (ringing of the ears), as well as for various disorders of the nervous, respiratory, and digestive systems, thyroid gland, and skin. It was also found to speed recovery from illness and slow aging processes.