Marzo 2003

Decreased melatonin excretion in cell phone users

Burch and colleagues report that cell phone use may decrease the output of melatonin from the pineal gland. They studied male electrical utility workers, who recorded cell phone use and collected urine samples over a 3-day period. They found that those with highest cell phone use had the lowest nocturnal excretion of the major metabolite of melatonin. The number of participants with high use was small. For a more detailed summary, see "Research - Clinical Experiments - Hormone secretion".

Reference: Burch JB, Reif JS, Noonan CW, Ichinose T, et al. (2002): Melatonin metabolite excretion among cellular telephone users Int J Radiat Biol 78:1029-1036.


Another study suggests RF radiation alters cognitive function

In February, May and September 2000, in May 2001, and in January 2003, we discussed in "What's New" the effects of RF radiation on brain function in humans. Another study reports changes in ability to perform tasks while exposed to RF radiation. The subjects in this experiment were exposed to 7 Hz-modulated 450 MHz radiation.

For more, see "Research - Clinical Experiments - cognitive function".

Reference: Lass J, Tuulik V, Ferenets R, Riisalo R, et al. (2002): Effects of 7 Hz-modulated 450 MHz electromagnetic radiation on human performance in visual memory tasks. Int J Radiat Biol 78:937-944.


RF radiation and chromosomal changes

Researchers from Israel have reported that exposure of human blood lymphocytes to RF radiation was associated with alterations in chromosome complement. The cells were exposed for 72 hours to radiation at a frequency of 830 MHz. The authors stated that the observed changes indicate that the radiation might pose a risk for cancer. For more, see "Research - Toxilogical Experiments - cancer".

Reference: Mashevich M, Folkman D, Kesar A, Barbul A, et al. (2003): Exposure of human peripheral blood lymphocytes to electromagnetic fields associated with cellular phones leads to chromosomal instability. Bioelectromagnetics 24:82-90



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