SCENIHR is the EU’s Scientific Committee on Emerging and Newly Identified Health Risks. They produce an Opinion on EMFs every few years. The latest was released in March 2015.
See full details of SCENIHR and the full Opinion. The section in the Abstract on ELF fields reads:
Health effects from Extremely Low Frequency (ELF) EF and MF
Overall, existing studies do not provide convincing evidence for a causal relationship between ELF MF exposure and self-reported symptoms.
The new epidemiological studies are consistent with earlier findings of an increased risk of childhood leukaemia with estimated daily average exposures above 0.3 to 0.4 µT. As stated in the previous Opinions, no mechanisms have been identified and no support is existing from experimental studies that could explain these findings, which, together with shortcomings of the epidemiological studies prevent a causal interpretation.
Studies investigating possible effects of ELF exposure on the power spectra of the waking EEG are too heterogeneous with regard to applied fields, duration of exposure, and number of considered leads, and statistical methods to draw a sound conclusion. The same is true for behavioural outcomes and cortical excitability.
Epidemiological studies do not provide convincing evidence of an increased risk of neurodegenerative diseases, including dementia, related to power frequency MF exposure. Furthermore, they show no evidence for adverse pregnancy outcomes in relation to ELF MF. The studies concerning childhood health outcomes in relation to maternal residential ELF MF exposure during pregnancy involve some methodological issues that need to be addressed. They suggest implausible effects and need to be replicated independently before they can be used for risk assessment.
Recent results do not show an effect of the ELF fields on the reproductive function in humans.