Is BlueTooth ... dangerous / "bad for you" ???

[TankPad]

No, Bluetooth is not at all bad for you.
It's short range, lower powered radio that operates within the same frequencies as many other common electronics around you (WiFi, remotes etc).
The fact that you are conscious of Bluetooth is merely a result of the use case, playing sound. When you're not playing music, you are still surrounded by a whole range of radio signals but because you can't hear them, you don't even think about it.

I would be more worried about the effects of prolonged audio if I were you. It seems you like to spend a lot of time wearing headphones and separate from the wireless stuff, this can be damaging to your hearing in the long-term.

[Cigarguy]

Life is dangerous and unpredictable. Death is safe, certain, and predictable. Live a little as most certainly we will all die.

[evening_hunger]

Death is safe, certain, and predictable.

And don't forget taxes!

[Thinkpad4by3]

Evening-hunger:
Evening hunger:
Evening- Hunger: Those can be a bit less predicticable.

Annecy:

Its safe. No question about it or it would be pulled from the market and thousands of people would be on the floor dead eith their bluetooth headphones. Humans have been surronded by cosmic background radiation for 200,000 years and we havent had a problem. I dont think your headphones are going to kill you.