Negative Ions Articles and Studies

Information on Negative Ions and the
Benefits of Negative Ions to Our Health

There are many benefits of Negative Ions stemming from the fact that negative ions attach themselves to airborne particles such as dust, pollen, smoke and dander, causing them to drop from the air. Because the air is free of these allergens, many people notice that it is easier to breathe. For more information on negative ions and the benefits of negative ions to our health, the following information is presented:

Negative Ion Studies

Studies Proving the Effectiveness of Negative Ion Generators, U.S. Dept. of Agriculture - A recent study by the U.S. Dept. of Agriculture found that ionizing a room led to 52% less dust in the air, and 95% less bacteria in the air (since many of the pollutants found in the air reside on floating dust particles).

The U.S.D.A. also performed another study to test the effectiveness of negative ionization at removing airborne Salmonella Enteritidis. The negative ions drastically reduced the airborne salmonella particles, prompting the following statement from the USDA:

"These results indicate that negative air ionization can have a significant impact on the airborne microbial load in a poultry house and at least a portion of this effect is through direct killing of the organisms." (Summary of Study from USDA Website)

Good Housekeeping Magazine - In March of 1999, Good Housekeeping Magazine had its engineers test an ionizer by using a smoke test, and found that it cleared out the smoke in a tank.

Agriculture Research Service (of USDA) - The Agriculture Research Service of the U.S. Dept. of Agriculture tested the effectiveness of ionizers for removing dust in a poultry hatchery. The dust level is very high in such an environment. In this study, the use of an ionizer resulted in dust removal efficiencies that averaged between 81.1 and 92.2%. The airborne transmission of salmonella (to the eggs) was also significantly reduced as a result. (Summary of Study)

Journal of Hygiene - Scientists showed that ionization reduced bacterial levels in burns and plastic surgery units by over 96% after a two week period, which results in much better and more rapid healing of patients.

Journal of Applied Microbiology - The use of negative ions was even found by scientists to reduce the presence of airborne viruses by about 40%. A study featured in the 1987 issue also showed the negative ions are free from any adverse side effects.

Science - A 1976 study featured in this publication provided evidence that negative ions can have a biologically lethal effect on airborne microorganisms.

Journal of Hygiene - A 1979 study found that using negative ionization in the air protected chickens from airborne infection of the deadly Newcastle Disease Virus.

Journal of Food Protection - A 2001 study found that airborne negative ionization was highly effective at destroying airborne and surface salmonella.

University of Medicine and Pharmacy (Romania) - A test on male rats showed that just moderate levels of negative ions increased the resistance of the rats, reducing or eliminating the effect of some chemicals.

Effect of Negative Ions on Drivers - A study by Toyota Central R & D Labs, Inc. found that negative ions can improve fatigue and cognition of drivers.

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Additional References

  • Baron, R. Effects of negative ions on cognitive performance. Journal of Applied Psychology 72:131-137, 1987.
  • Charry, J. Biological effects of small air ions: a review of findings and methods. Environmental Research 34:351-389, 1984.
  • Hawkins, L. The influence of air ions, temperature and humidity on subjective well-being and comfort. Journal of Environmental Psychology 1:279-292, 1981.
  • Jackson, J. et al. Influence of serotonin on the immune response. Immunology 54:505-512, 1985.
  • Kotaka, S. Effects of air ions on microorganisms and other biological materials. CRC Critical Reviews in Microbiology: 6:109-149,1978.
  • Krueger, A & E. Reed. Biological impact of small air ions. Science 193:1209-1213, 1976.
  • Sulman, F. The effect of air ionisation electric fields, atmospherics and other electric phenomena on man and animals. Springfield, IL: C.C. Thomas, 1980.

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