Here is something from Bau-Biologie that is interesting:

Microwave Radiation – Cell phones, Wi-Fi
Are they safe?

As fast as possible, our society is becoming more and more technologically oriented. Homes, schools, offices, entire communities are making decisions to go wireless. Cell phones are proliferating at an alarming rate. These devices were never pre-market tested for your safety. There is an incorrect assumption that the government has “approved” these and that the research shows these are safe.

What are the hazardous levels of microwave radiation? It all depends on with whom you speak. From the perspective of Building Biology, it is when the cell structure or bio-communication of an organism starts to exhibit variations from a natural baseline. For example, if blood cells start to clump together at specific electromagnetic field strength, then this would be characterized as a variation of normal cellular activity, a deviation from the natural baseline, and therefore hazardous. Whether or not a person would exhibit a symptomatic response is NOT the determining factor, but that is the basis for most industrial standards – radiation is safe unless the skin actually burns.

Independent, medical science continues to provide mounting evidence that radiation from wireless communication devices, including cell phones, cordless, and the WiFi now deployed across schools, hospitals and offices, produces dangerous health effects. It is important for you to take protective steps as a consumer. We are concerned with eliminating as much as possible, the man-made artificial stimuli that can bring about this change. Thus, we hope to prevent the chronic low-level exposures that are very significant concerning health issues.

What can I do about it?

There are, however, some initial steps you can take today to protect you from EMR exposure.

1. Minimize all exposure and usage of wireless communication: cell phones, cordless phones, and WiFi devices.
2. Turn cell phone off when not in use and definitely when sleeping. Never keep it near your head or use it to play games, movies, etc.
3. Keep cell phone at least 6-7 inches away from your body and others while on, talking, texting and downloading.
4. Never keep cell phone in pocket or on hip all day. The hip produces 80% of the body’s red blood cells and is especially vulnerable to EMR damage. The close proximity may also affect fertility.
5. Do not talk on cell or cordless phone when pregnant, with a baby/small child in arms, under age 16, or while in a vehicle (car, train, plane, subway) – the radiation gets trapped and is higher in these closed metal zones!
6. Replace all cordless and WiFi items with wired, corded lines (phones, Internet, games, appliances, devices, etc.). The cordless phone base emits high levels of EMR – even when no one is making a call. (900MHz Analog cordless phones are okay)
7. Minimize/space out computer use, sit back from the screen; flat screens are preferable. Use wired Internet connections, not WiFi – especially for laptops. Keep laptops off of the body and preferably on wooden surfaces.
8. Keep a low-EMR sleep, home, and personal zone. Move alarm clock radio at least 3 feet from head or use battery power; 6 feet is the recommended distance from all electronic devices during sleep.
9. Avoid waterbeds, electric and metal frames. Futons/wood frames are better than metal-coiled mattresses and box-springs. Metals attract EMR: keep them away from and off of the body.
10. Ensure that there are no electrical appliances, power meters, or circuit panels on the exterior or interior wall of bedrooms.