Health concerns are the least of people's concerns about smart meters, Bob. Mostly, people are concerned about the insidious information gathering and violation of privacy these devices bring.
Uh what information would that be? You use more electricity when you are home and less when you are away at work. You gotta realize that your life is pretty mundane and boring and nobody would really want to analyze it. There are a lot more important issues to be concerned with and the government liberals are probably happy that people are taking the time to concern themselves with this issue.