Are Computers Hurting Your Health ? - Page 31 Women and Stress in the 1990's Section - Page 1 Are Computers Hurting Your Health ? - Page 28 Are Computers Hurting Your Health ? - Page 33

A 1991 study, directed by Dr. M. L. Walsh, studied VDT workers at Ontario Hydro and reported no evidence of hazardous exposure to VLF and ELF electromagnetic fields but noted "substantial discomfort from ergonomic factors."

In the US, NIOSH has been studying the effects of VDT's on the reproductive health of women. However, the questionnaire used for the study deleted references to both fertility and stress and this may weaken the credibility of the final outcome.

One part of that outcome was published in the New England Journal of Medicine in 1991. A study of 882 pregnant women found no association between VDT use and miscarriage rate. A British study reported in 1992 found no difference in miscarriage rate between 150 women exposed to VDT's compared with 297 women not exposed to computers during pregnancy.

However, as Dr. Louis Slesin points out, neither study group measured the total electromagnetic exposure, and there may well be other sources of such exposure in the modern office besides the computer.

The most important recent study on the relationship between strong magnetic fields and miscarriage was reported at a conference in January, 1992. This Finnish study showed that women who use VDT's that emit strong magnetic fields may have a risk of miscarriage rate three and a half times greater than women who use VDT's with lower magnetic fields. Dr. Maila Hietanen of the Institute of Occupational Health in Helsinki, Finland said, "The study did not reveal a miscarriage risk when women were classified according to the number of hours they worked at a VDT. It's only when exposures were classified according to actual magnetic field exposures that you see an effect."

At present, there is no agreement as to what levels of exposure to electromagnetic radiation might be considered safe. Certainly the safety of unborn children especially in the first three months cannot be guaranteed.

Vlf Waves Give Us Feedback On This Subject Text Scroll This Chapter Check Out Doctor DeMarco's Recommended Health Products The Question Of Cataracts Shielding For Radiation

One way to shield both VLF and ELF waves is through the use of MU metal but this is technically difficult.

Several companies, including IBM and JVC, have manufactured computers that shield VLF radiation for sale in Sweden where the government regulations require it. Recently the Swedish government issued a new protocol for VDTs which includes shielding for ELF as well as VLF exposure. Late in 1989, IBM made these VLF shielded computers available for sale in the U.S. Another company, Digital Equipment Corp. of Maryland, has been selling VLF shielded VDT's for a few years.

Paul Brodeur told VDT NEWS (Jan/Feb/90): "IBM's move is a half measure because it does not deal with 60 Hertz [ELF] fields that are emitted by VDTs. The studies of 60 Hertz radiation done in the last ten years clearly show that these fields suppress the immune system, affect cells, and promote cancer, especially leukemia, lymphoma and brain cancer. Since it is known that 60 Hertz fields are the dominant radiation emitted by computer terminals, IBM's failure to acknowledge this hazard seems irresponsible."

Because the electromagnetic fields decline with distance, and are larger at the back and sides of the computer, the most sensible solution is to make sure that you do not sit too close to your own computer or someone else's. All VDT operators should be at least 28 inches from their own terminals and 40 inches from other terminals.

Shielding For Radiation Give Us Feedback On This Subject Text Scroll This Chapter Check Out Doctor DeMarco's Recommended Health Products X-rays The Question Of Cataracts

Radiation induced cataracts have been reported among VDT operators in North America.

In 1981, a 54-year-old bank secretary won a Workman's Compensation Board appeal for compensation for cataracts of this type in New York. So far in Canada no awards have been made for this type of eye injury.

To date studies have not revealed an increased incidence of cataracts among VDT users. But definitive studies have not yet been done.

The Question Of Cataracts Give Us Feedback On This Subject Text Scroll This Chapter Check Out Doctor DeMarco's Recommended Health Products Ultraviolet, Infrared And Visible Light X-rays

Weak X-rays are generated from the impact of high speed electrons on the screen and most of them are absorbed by the screen.

Are Computers Hurting Your Health ? - Page 31 Women and Stress in the 1990's Section - Page 1 Are Computers Hurting Your Health ? - Page 28 Are Computers Hurting Your Health ? - Page 33


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