Radio Signals

I realise radio waves were used to convey morse code at first... then in war, they started using radio to convey verbal messages.

Transmission of radio waves at that time weren't done in an area broadcast, its sort of a directional beam of transmission.

As radio waves are easily picked up and intercepted, the messages themselves were encrypted. "Alpha orange intercept wasp nest" etc etc...

But nowadays radio is more or less used for entertainment and news broadcast. I just had this thought, if wherever we are, we can recieve radio signals, so many channels somemore, does that mean we are in constant exposure of radiowaves at all times? will we get cancer?