gnu, I've been wondering about that too. I recently started using a cell phone and I'd feel better about it if I used a hands-free attachment. Haven't done it yet, though.

Since a very high proportion of its population in Japan started using cell phones a long while before the those in the west did, I imagine any demonstrable ill effects will show up over there first? When was the technology developed and gotten into the hands of millions? About 20 years later one might expect observable effects- nicht wahr?