A study by Dr. Magda Havas and colleagues in the peer-reviewed European Journal of Oncology Library Vol. 5, 2010 shows that radiation from a digital cordless phone base station affects the heart in a double-blind provocation study.
According to this research, some individuals are hypersensitive to microwave radiation and respond when they are exposed to levels well below federal guidelines (5 microW/cm2 or 0.5% of guidelines in Canada & U.S.). During real time monitoring of the heart some individuals experienced an irregular heart rate or a rapid heart rate that occurred only during provocation and not during sham exposure (when the radiation was off). This is the first study showing such dramatic and repeatable results.
More information and videos via Dr. Magda Havas, PhD » New Study: Radiation from Cordless Phone Base Station Affects the Heart.
Please Note: The cordless phone base station beacon signal used in the study operates at at 2.4 GHz.
The Smart Meters being installed in Australia operate at 900MHz and 2.4 GHz http://www.powercor.com.au/Smart_Meters/Meter_Functions/
The Australian Radiation Protection and Nuclear Safety Agency (ARPANSA) Frequencies now similar to mobile and cordless phones!
Stop Smart Meters Australia 
I am not surprised by the results of this study as since I have removed my cordless base station my Arrhythmia (irregular heartbeat or abnormal heart rhythm) issue has reduced dramatically. I was having lengthy episodes 3 to 4 times per week, and since changing phones over 8 weeks ago have only had 3 episodes in total. We all need to take notice of these studies as the affects in future if more and more wireless appliances and metering goes ahead, life may become unmanageable for many of us.