I’m not sure KB, but being a far higher frequency it has difficulty getting into and out of buildings so there will need to be more cell towers. I guess what is being said is that electromagnetic radiation has health side effects so more electromagnetic radiation will cause more side effects. Would devices need to be higher powered to be able to communicate with the cell towers from inside a home? Maybe. In which case, those devices inside a home could give more side effects due to the increased power.
I think diabetes is given as an example here as (she says) it is given to lab rats by exposing them to radio signals. How much? She doesn’t say. A microwave oven uses electromagnetic radiation to cook food. Typically this is 600w for say 5 minutes. Phones are usually 1/4w so far less powerful by a factor of 2400 so would 2400 x 5 minutes give the same effect as on the food? 12000 minutes or 200 hrs exposure? There’s then proximity to take into account, a Smart phone being probably the worst for proximity.