In a case study, the hypothesis was investigated whether the symptoms assigned to electromagnetic hypersensitivity (EHS) which a previously healthy office worker developed after moving to another office might be attributed to the exposure to electromagnetic fields.
A 55 year old previously healthy female office worker changed her work place to another office at the 6th floor close to base stations on the roof. She had worked in the same building for almost 10 years at another location without health problems. During the following months after she had changed office she experienced increasing health problems. She attributed the symptoms to the working place, as the symptoms diminished while being away from the premises and reappeared and increased when back.
|Exposure 1: 5 Hz–400 kHz|
|Exposure 3: 50 Hz|
|Exposure 4: 2–400 kHz|
|Exposure 6: 87–5,850 MHz|
Measurements were conducted in the office on a business day afternoon
All measured field levels were within the current safety limits, however the working premises were demonstrating elevated exposure levels both to the radio frequency electromagnetic field and the extremely low frequency magnetic field. (Remark EMF-Portal: Exposure data of the former office were not provided.)
The authors concluded that the exposure to electromagnetic fields at the working place could be the cause for developing EHS-related symptoms. The association was strengthened by the symptom reduction outside the working place.