Five medical tests to think twice about

A study released last week by The Commonwealth Fund, a private foundation, released just last week said the United States spends by far the most of 13 industrial countries on healthcare. It's believed that as much as 30 percent of health care spending in the United States is unnecessary.

In the new issue of Consumer Reports magazine, the editors points to five medical tests that could be harmful to your wallet, and perhaps even your health.

The magazine focuses on EKGs and exercise stress tests, imaging tests for lower-back pain, CT scans and MRIs for headaches, bone density scans for low-risk women, and antibiotics for sinusitis.

The list was culled from a longer one compiled by a project called Choosing Wisely, a coalition of physicians groups and medical societies.

On "CBS This Morning: Saturday," Dr. John Santa, director of the Consumer Reports Health Ratings Center, discussed the five tests and why doctors suggest them as often as they do>

To see the interview with co-hosts Jeff Glor and Rebecca Jarvis, click on the video in the player above.