- It will cure your hayfever! https://i.imgur.com/yXpONhN.png
- Wear a radium pad for great health! https://i.imgur.com/NlnzYOx.jpg
- Drink Radium water for better health! https://i.imgur.com/d1uIUGO.jpg
Story is explained here https://www.theatlantic.com/health/archive/2013/03/how-we-re...
...and probably there were people back then saying "Oh more scare stories about Radium again?!?"
Where mobile phones are concerned, I remember my old Ericsson GA628 that used to heat up my ear leaving it red after 5 minutes of conversation.
What's worth bearing in mind is we deployed mobile phones to the public at large before we had any significant data of their long term effects on us. Likewise 5G - we'll only really know what is does to us long term once we've gathered a few years of data, but that's not going to stop us deploying it. So yes it won't immediately kill us but we're deluding ourselves to say we know for sure there's no harm long term.