How many people do you know with a mobile phone? Well, with something like 1.5 billion mobile owners on Earth right now, the chances are that probably just about everyone you know has one. But are they entirely safe?

Radio waves from mobile phones harm body cells and damage DNA in laboratory conditions, according to a new study majority-funded by the European Union, researchers said on Monday.

The so-called Reflex study, conducted by 12 research groups in seven European countries, did not prove that mobile phones are a risk to health but concluded that more research is needed to see if effects can also be found outside a lab.

The mobile phone industry continues to boom, with 650 million mobile phones expected to be sold to consumers this year. But are we sitting on a health time bomb bigger than that caused by smoking? In ten or twenty year’s time, will we see a cancer pandemic caused by wide-ranging mobile use?