What is the possible effects to living things and environment of extremely low frequency?

The issue of extremely low frequency (ELF) biological effects is very controversial. Research has focused on possible carcinogenic, reproductive, and neurological effects . Other suggested health effects include cardiovascular, brain and behavior, hormonal and immune system changes.

These approaches involve reducing both the exposure level and duration.

Protection from EMF exposure

The most common solution for shielding low frequency EMI is to use a high permeability magnetic shielding sheet metal or foil . Typical examples of shielding foils include specialty ferromagnetic alloys branded as MuMetal®, Netic®, Finemet® and Metglas® to name a few.