[evan_au]

people say (WiFi) can affect the quality of our sleep.

If you spend most of the night on social media (via WiFi), that will definitely affect the quality of your sleep!

[Peter11]

The first thing to look at is the effects of electromagnetic radiation. Its a known health issue linked to cancer suicide and damages DNA among other things. Prior to 2000 there was mostly natural radiation now there are cell towers blasting signals cell phones computers TVs routers all pulsing out this electromagnetic radiation you really can't get away from. The question will be what kind of long term effects will this have on humans. We will find out in the next 20 to 40 years.
In a modern home everything is putting out a signal the lights the oven the fridge the vaccum the cell phones the alarm and I could go on so its not just the router.
Some people have taken to shutting it down at night and claim to sleep better.

[evan_au]

electromagnetic radiation.... damages DNA

It is true that electromagnetic radiation at UV and higher frequencies does damage DNA by breaking the chemical bonds; sometimes that damage cannot be repaired by your cells. That's why you should use sunscreen if you are going to spend a long time in bright sunlight.

However, visible and Infra-Red radiation have too low energy per photon to break DNA bonds.
- The frequencies used by WiFi and 5G cellular towers are much lower again, and cannot break bonds in DNA
- Your phone can get hot, and the radiation can also heat the skin; if you feel your ears burning, it's time to switch to hands-free.

[Peter11]

How about the high suicide rate half the children want to kill themselves startling numbers.It has been linked to suicide and severe depression.I don't think we know what the effects will be its a wait and see thing keeping fingers crossed that there are no long term effects.We are taking about being continuous exsposed some kids have been continuously exposed since birth in todays world.To write it off as nonsence is a mistake this world runs off money and there is way too much money involved to ever admit theres a problem money comes first over people.
There is not much scientific evidence because very few studies have been made because the use is recent.They are doing studies now that people have been exposed long term.The jury is out until a proper study is done. But with a huge amout of money involved a bad review could disappear or put on the bottom of the pile.

[paul cotter]

Peter11, if there is any data concerning depression/suicide rates I would strongly suggest it is caused by the content these young people are accessing rather than any non-ionising radiation. Also the bizarre practice of living a "virtual life" by means of a screen will undoubtedly have severe downstream mental health consequences. Tv and radio transmitters have blasted the environment with megawatts of power over a long period with no adverse reactions. Uhf tv signals are close enough in frequency to wifi. I classify this idea as yet another unsubstantiated conspiracy theory. 

[wolfekeeper]

Wi-Fi operates at 0.1 watts. There's no known harm at such low levels. A cell phone transmits on the cell phone frequencies at up to several watts. There is some evidence of issues if you hold a cellphone to your head while making phone calls.

[Bored chemist]

half the children want to kill themselves

https://xkcd.com/285/

[Zer0]

Follow up Question :-

How far can We go, before it starts getting Harmful?

10G?
100G?
1000G?

📵

[wolfekeeper]

'<X>G' is just the generation of the standard used to communicate. It's got nothing to do with increased danger. There's no reason to think that 5G is more harmful than 3G or 4G or that 6G would be more dangerous either.

[Bored chemist]

Follow up Question :-

How far can We go, before it starts getting Harmful?

10G?
100G?
1000G?

📵

Among the things that takes you from one generation to the next is dropping the power (strictly, the energy) needed to transmit a given bunch of data.
On that basis the "harm" (measured, for no good reason as RF energy emitted) actually falls.

[evan_au]

How far can We go, before it starts getting Harmful?
10G?
100G?
1000G?

Around 7x10¹⁴ Hz. which is about 70,000GHz.
Above that, the photons have enough energy to disrupt chemical bonds, including DNA.

[Zer0]

Hmm...so a pretty long way to go then.. Considering 6G is limited between 95GHz - 3000GHz.

By the way, on what " G " then does NASA operate?