Nonionising radiation created by a flow of electricity. Manufactured EMFs, which have higher frequencies than those occurring from the earth’s magnetic field, can affect the body tissue. Direct evidence is lacking, but health risks linked with EMFs are: impairment of the immune system, reducing the ability of the white blood cells to kill tumour cells and fight disease; adverse effects on the central nervous system, brain and glands that are connected with cancers and other physical and emotional problems; influence on body’s control of cell growth; adverse effects on the skin. Magnetic fields are best dealt with by designing them out or shielding them at source. Employer’s risk assessments under MHSW should include EMFs.