It’s the moment we’ve all been dreading. Initial findings from a massive federal study, released on Thursday, suggest that radio-frequency (RF) radiation, the type emitted by cellphones, can cause cancer.

The findings from a $25 million study, conducted over two-and-a-half years by the National Toxicology Program (NTP), showed that male rats exposed to two types of RF radiation were significantly more likely than unexposed rats to develop a type of brain cancer called a glioma, and also had a higher chance of developing the rare, malignant form of tumor known as a schwannoma of the heart.

This is one of those subjects that has been hotly debated, but this multi-year study suggests that there is indeed an increased risk.

Personally, I use a headset whenever I make a call more than a minute or so; not because I’m worried about radiation, but because holding a phone to my ear for a long time hurts my shoulder.

I’ve also wondered about Bluetooth radiation. Those wrist computers many of us are wearing now; could they be dangerous?

Source: “Game-Changing” Study Links Cellphone Radiation to Cancer – Mother Jones