The first thing I did with my router was turn off Wi-Fi permanently.

I didn't need to read the scientific journals, or listen to anecdotal evidence, I just knew it was not good for me and mine.

It's not gonna get better moving forward. Read up on upcoming protocols for Wi-Fi devices, including the one that allows the device to read its immediate environment, and then broadcast the sensor data to a third party IN REAL TIME. That means your Wi-Fi router is going to become a real-time spy device, in your home, for whomever is receiving its data.