In an earlier life I had close contact with a charity involved in cancer research; all of the people involved in the research used wireless headsets...

America Wastes over 70% of the Energy it Consumes !
The Energy Waste is Everywhere !
(1) We consistently over heat and over cool our homes, businesses,
offices, schools, churches, etc...
(2) 100's of millions of lights are on unnecessary every day and every night.
(3) Landfills are busier than ever. Over packaging with plastics is
the norm. Recycling is optional and thereby inadequate.
(4) Most Americans do not minimize their driving. Therefore,
congestion on roads is horrendous.
(5) Road construction is the ultimate contradiction!

Until the price of gas is $7 to $8 per gallon, Americans will not
significantly reduce their waste and over demand for energy.
The economic impact of taxing energy is the way to eliminate energy
waste and over demand. Only with a tangible dollar reward /
consequence will America care and act to conserve. Crude oil must be
taxed at $300 per barrel (55 gal) and 'offset' by making Federal
Income Tax begin at $70k. High energy costs are also the incentive by
which sustainable energy supplies will be developed. In the mean time,
the USA continues its incredible energy waste and gives away its
economic and political wealth to the Islamic Middle East via OPEC.
Know that the Islamic dominated OPEC cartel is glad to allow supply
and demand market forces to drive energy prices to $8/gallon. Our
hedonist energy waste empowers the Islamics who desires our demise.

China, India, and other 'developing countries' have only begun to
compete for the world's remaining fossil fuels. Unless global demand
for fossil energy is dramatically reduced, world war is inevitable
(future geopolitical unrest will be directly related to global
competition for energy and natural resources).
Ford and General Motors are headed for bankruptcy, which will leave
100,000,000 Americans unemployed, ruin our economy, and lead to
anarchy. America can no longer continue to 'do business as usual'.
Ford and GM must quickly transition to the lucrative business of
building solar and wind 'energy producers' for the world's 6.7 BILLION
people reason$. The world cannot continue to support all the
automakers. We are running out of petroleum !
Mass transit must reward those who reduce their driving and thereby
become FREE, SAFE, CLEAN, and CONVENIENT.
The incentive necessary to create renewable and sustainable energy
supply can ONLY occur when we implement the economics of TAXING ENERGY
in lieu of income taxes.

To be honest, I tend to agree with Herberman and err on the side of possible health impact - but only so far as I would be cautious and mindful of other tech toys. I think with everything, the concept of moderation is perhaps best?

I like the snarky photo.

What the evidence says, and will probably continue to say forever, is that the risk if any is miniscule. That's what you'd expect in the case where there is no effect.

The precautionary principle is over-used in many cases, and this is one such.