To make sure I understand the energy levels right: 6 watts per kilogram would be roughly like sleeping with a multi-kilowatt radio transmitter running in your bedroom?
Far more than that. It would be about half as bad as literally sleeping inside a microwave oven at full blast. The rats were kept in a shielded room so the microwaves bounce around until they are absorbed. It's no wonder they got cancer.
I do wonder why they got cancer. The industry always told us that non-ionizing radiation is harmless and it’s laughable that it should have ANY effect. So now there’s at least brain and heart tumors, and, strangely, improved kidney function.
Non-ionising radiation does not penetrate deep into the tissues but increases the risk of damage to the skin and eyes. Dependent on the energy and exposure time, non-ionising radiation can cause localised heating, or photochemical reactions can occur with possible permanent harm.
It's not totally harmless. Just orders of magnitude less than ionizing radiation.
I generally agree with you, but not with the "does not penetrate deep into the tissues" part. Non-ionizing radiation includes frequencies like 980nm (near infrared) which penetrates 3 centimeters deep at ~15W: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4552256/
Microwaves have wavelengths orders of magnitude longer than infrared light and can penetrate even deeper at the same wattage. It would IMO be VERY iffy to say that the possibility of photons emitted by a cellphone reaching the brain is zero.
