One of the reasons for the high cost of health care in the US is the over-utilization of services. Unfortunately, many times the tests and doctor procedures are not necessary and may even be detrimental to your health.
Here are some resources to help you determine whether or not you need a particular test or procedure:
Bone Mass Measurement
Colorectal Cancer Screening
Prostate Cancer Screening
Here is an interesting article about the potential pitfalls of testing:
Spine surgery is often unnecessary and ineffective but reaps big rewards for the medical industry.