Some of possible adverse health effects of electromagnetic field exposure are lipid peroxidation and cell damage in various tissues.
24 male were randomly divided into three groups: 1) untreated for 6 months (control, n = 8), 2) exposed to low frequency (50 Hz) electromagnetic fields for 5 minutes every other day for 6 months (n = 8), or 3) exposed to electromagnetic fields and daily zinc sulfate administration (3 mg/kg/day) (n = 8).
|Setup||single coil wrapped around the plastic cage (35 x 25 x 25 cm)|
|Sham exposure||A sham exposure was conducted.|
|Additional info||Rats in one of the group received a daily intraperitoneal injection of 3 mg/kg zinc sulfate in isotonic saline solution of less than 0.5 ml for 6 months.|
|magnetic flux density||5 µT||unspecified||calibration||-||-|
TBARS levels were higher (both in plasma and brain tissues) in electromagnetic field-exposed rats with or without zinc supplementation, than those in controls. Additionally, TBARS levels were significantly lower in the zinc-supplemented animals than those in the electromagnetic field-exposed rats.
Glutathione levels were significantly decreased in electromagnetic field exposed rats, and were highest in the zinc-supplemented animals.
Plasma zinc was significantly lower in the electromagnetic field-exposed animals than those in controls, while it was highest in the zinc-supplemented rats.
The data suggest that long-term exposure to low frequency electromagnetic field increases lipid peroxidation in the brain, which may be ameliorated by zinc supplementation.