Healthcare disparity

We are studying about the health care disparities around the world in Sociology. I was interested in knowing that there was so much disparity between the avg health care that people received here in the US versus around the world in developing countries. I was also shocked to learn that there are 45 million people here in US that do not have health insurance. I think that health care in the US is too much driven by legal issues. (too many health care professionals are afraid of being sued by there patients, and they take out insurance that drives prices for patients. I also think that doctors are running unnecessary tests for patients that is driving up the cost of health care.