Case #1: 51-year old female, no health complaints; Ontario, Canada

A healthy 51-year old female installed the G/S filters in her home and in her office at work. She completed a wellness questionnaire daily for 1 week prior to installation of the filters and

for 4 weeks after filters were installed (Sept 6 to Oct 10, 2004). The rectifier, in light dimmer switches, chops the sine wave and generates microsurges that travel along electrical wiring.

For this reason, readings2 of the dirty electricity were taken in her home with and without the dimmers on (Table 1). The dirty electricity in her home reached a peak at 470 GS units (see www.stetzerelectric.com for definition of GS units) with dimmer switches off and 1130 GS units with them on. Graham/Stetzer filters reduced values from an average of 300 to 40 GS units with dimmer switch off and from 440 to 70 GS units with dinner switch on. Values

should be less than 50 and, for optimum effectiveness, less than 30 GS units (HSSP 2003). She also installed 4 filters in her office at work but was able to reduce the dirty electricity from 400 to only 100 GS units since microsurges were coming from neighboring offices. In situations like this, G/S filters need to be installed in neighboring offices as well. Ideally an entire building should be filtered to optimize power quality. During the period of the study

she spent most of her time at home and approximately 6 hours at work each weekday.

Although this person considered herself healthy and ranked herself high on the wellness questionnaire, she did notice changes after the filters were installed. Her sleep improved immediately (this is a common response) and she began to have vivid dreams. If she woke up in the middle of the night she would return to sleep quickly. Although she did not consider herself anxious, she noticed that she was calmer and had more energy after thefilters were installed. She had less head "pressure", stiffness, and muscle pain (Figure 3). She also noticed that she no longer had cold extremities at night (see Case Study #4).

Table 1. Power quality in the home or workplace of each of the case studies.

Dirty Electricity (GS units)

Case Details Without Filters With G/S Filters

1 EHS: electrical hypersensitivity

2 MS: multiple sclerosis

3 values for school are in mV (rms) for frequencies up to 20 kHz. Measurements were taken with a Fluke 79 III

meter connected to a Graham Ubiquitous Filter, which removes the 60-Hz sine wave.

She wanted to participate in this study because her recently deceased husband, who was suffering from mercury poisoning, felt "discomfort" in certain rooms of the house. When we measured the dirty electricity in her home, the high values corresponded to rooms in which

he felt unwell. She wanted to know if her wellbeing was affected by the poor power quality

in her home. These results suggest that it was and raise the question, "Is she electrically hypersensitive?"