Radiation of wlan´s, mobile phones & co

[Panthau]

What do you think of it? Should be cared about it, or is it safe?

I´ve just been reading about concentration problems, bad shorttime memory and such things about wlan, and our router is directly on the wall to the bed of our son. Im gonna put it somewhere else, but even if i turn it off completly, im surrounded by 4 other wlans.

So im afraid, even if it is unhealthy, theres no way to avoid it other then to move into a small woodhouse in the mountains...