Electromagnetic Fields 2015 Update
9. Are there health effects from combined exposures to different EMFs or co-exposure with other agents?
The few available studies on combined
exposure to different EMFs do not provide sufficient
evidence for specific risk
assessment. The studies on effects on DNA integrity
after an MRI investigation are clearly of interest to follow up.
However, it is not clear which component of the complex EMF
exposure during scanning may cause the effect: SMF, switched
gradient MF or the pulsed RF EMF with its heating effect.
Further studies on DNA integrity and MRI exposure are needed,
and the feasibility of cohort
studies of MRI patients and occupationally exposed
personnel should be discussed.
Regarding co-exposure to ELF or RF with
several chemical or physical agents, an increase or a decrease
in the effects of some chemicals or physical agents have been
observed in some cases. However, due to the small number of
investigations available and the large variety of protocols
adopted (different chemical or physical treatments and different
EMF exposure conditions), it is not possible to draw
conclusions. Further investigations should be carried out to
clarify the role of EMFs in increasing/decreasing the effect of
other treatments such as UV
radiation and ionising
radiation and to explore the potentially beneficial (protective)
effects of such exposures on humans.