To summarise the results, it can be said that by far the majority of the national evaluations have come to the conclusion that there is no scientific evidence that backs up the theory that magnetic fields cause cancer, but that it may be wise to adopt a precautionary approach.

Sweden
In the early 1990s, the Swedish authorities followed the Danish health authorities' example and conducted an evaluation of research results.

In 1995, the Swedish Social Agency (Den svenske Socialstyrelse) concluded that there was no basis for saying that magnetic fields are the cause of cancer. However, the Scandinavian studies suggest an association between magnetic fields and cancer, but the association is weak, and there is no biologically credible explanation of how magnetic fields could be the cause of cancer. The Swedish agency did not recommend exposure limits but adopted a precautionary approach. This principle included recommendations to reduce fields and not construct new power lines close to residential areas provided the costs entailed are 'reasonable'.

United Kingdom
The British health authorities have also evaluated the research findings from time to time. Most recently, the NRPB (today HPA = Health Protection Agency) evaluated the research in 2001. The conclusion is in line with the one published by the International Agency for Research on Cancer (IARC) a year later.

USA
In 1998, the American National Institute of Environmental Health Sciences (NIEHS) published its research evaluation, using the IARC assessment criteria. This evaluation is also in line with the evaluation subsequently published by the IARC. The American government later recommended a precautionary approach focusing primarily at increased information and a reduction of field sizes where possible.

Other countries
Many other countries have conducted independent research evaluations. The most recent and authoritative evaluation was published by WHO in 2007. In a project covering a ten-year span, WHO evaluated all accessible research. The project was supported by countries and organisations worldwide.