It took almost 50 years to starting to debunk health issues created by Sugar. It took decades to accept the health issues created by Lead and Asbestos. Sometime I wonder if chemicals from bottled water, radiation from Cellular/Wifi/Bluetooth pose health risks and we will find it out decades later.
There are a lot of unknowns. Chances are it's not going to be Bluetooth, but some toothpaste additive, cellphone case sealant, or something else nobody really thought about that we are going to look back and cringe.
I use organic/natural exclusively. Try to model my life closed to simple ingredients people used more than 100 years back. I also diversify things I consume. Someone once posted on HN: His grandpa told him everything is poison, so use everything in moderation. I really liked this recommendation.
However it is very difficult to prevent all the radio waves in today's world as much as you try. Maybe it's not harmful but we won't find out for decades.