Mr Paul... 15 years working in the mobile industry all in RF and all related to RF and SAR and I can safely say that I have no radiation specific ailments, nor do any of my colleagues and believe me I've worked with some of the shittiest prototypes in RF shielded chambers, sat next to signal repeaters and when I was a grad recruit standing atop of a tower licking an antena.
With WiFi the absorbtion to tissue ratio is much less than that for a mobile or dect phone, the propagation of the signal is less focused again reducing any alleged RF pickling of the brain.
Reminds me of when I worked at Orange...
We had a deal with a church in Glastonbury to hide antenna on all four sides of the tower behind the louvres, this gave us excellent coverage over the town and good coverage for the festival.
The local hippies/parents found out and because a school was directly in the shadow of the church they moaned and groaned and petitioned, even picketting the office in Bristol, till we shut down the antenna. Shortly after the complaints about poor coverage in Glastonbury rocketed and whe we checked the complaints list against the petition the majority of the complaints were from people on the petition!
Stupid thing was, when the antenna were errect and the angles of propagation calculated, both physical and electrical the filed of propagation missed the school entirely and there was bugger all signal in or around the school.
If you're that bothered my solution is that you visit Wilko's, I recommend the one in Acocks Green, value pack of tinfoil, wrap round head several times to desired effect and bingo! Colander might work if you have one in the cupboard.