EMF Health-effects Research

Effect of GSM microwave exposure on blood-brain barrier permeability in rat

Fritze K, Sommer C, Schmitz B, Mies G, Klessing M, Hossmann KA, Weissner C,

Acta Neuropathologica 94: 465-470 1997


Contractors: Max Planck Institute for Neurological Research, Cologne, Germany; and Institute for Neuropathology, Ruprecht Karis university, Heidelberg, Germany.

This study investigate whether the RF exposures reference in the summary immediately above could cause alterations in the blood-brain barrier (BBB).

The resarchers concluded there were no BBB-related changes at the SARs of 0.3 W/kg and 1.5 W/kg. A higher incidence of BBB effects was noticed at the SAR of 7.5 W/kg outside the range of exposures from portable communications devices operating within internationally recognized safety guidelines.

The researchers said further studies would be necessary to confirm the results at 7.5 W/kg, evaluate their possible significance and assess the role such factors as stress and heating might have in producing such effects.

Additional Web Notes

Again, a serious breach of the BBB is noticed at higher exposure levels -- but this is put down to possible heating. The researchers wanted further studies done: Where are they?

We now know that cellphones can produce localised SARs in brain tissue well above the international guidelines.

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