There is no research that shows that it is a health problem. They made that up to scare people.
The bigger problem with a high transmit power is that is fills up the air with more radio waves; it's like space junk. Higher power doesn't always mean a better or faster connection. Sometimes it does, but it really varies case by case. If you live in an area with a lot of wireless a high transmit power is likely to make congestion worse and it won't help you are all.




