These things are dangerous:
Digital Communication devices,
wireless system - Wi Fi, modem etc
mobile phones,
computers, IPad
electric appliances ...
For further scientific exploration and hidden fact of how these things deteriorate your health, cause vital organ failure and pre-mature ageing, please read inside.
In 2001, an expert scientific working group of WHO’s International Agency for Research on Cancer (IARC) reviewed studies related to the carcinogenicity of static and extemely low frequency (ELF) electric and magnetic fields.Using the standard IARC classification that weighs human,animal and laboratory evidence,ELF magnetic fields were classified as possibly carcinogenic to humansbased on epidemiological studies of childhood leukaemia.
Based largely on the data, IARC has classified radiofrequency electromagnetic fields as possibly carcinogenic to humans (Group 2B), a category used when a causal association is considered credible, but when chance, bias or confounding cannot be ruled out with reasonable confidence ----- World Health Organisaton
http://www.iarc.fr/en/media-centre/pr/2011/pdfs/pr208_E.pdf