Overkill An avalanche of unnecessary medical care is harming patients physically and financially. What can we do about it?

It seems to be common sense that more medical care equals better health, but like anything else too much of anything can be bad. Here is a very good article by a surgeon arguing that we are now getting too much medical testing and treatment and in some cases it is doing more harm than good, and it is also costing us a lot of money. 
It is a rather long article but I encourage you to read it...at least the first 2/3 where he talks about the possible harms from over testing and over screening.
Do you understand how over testing can be harmful?

Overkill An avalanche of unnecessary medical care is harming patients physically and financially. What can we do about it? BY ATUL GAWANDE