Who should be screened for lung cancer with the new, low-dose CT scans?

It’s a tough call because doctors disagree and insurance doesn’t pay for the test, so if you do opt for it, you’ll be paying out of pocket — around $300.

Is there anything an ex-smoker can do to decrease the chances of getting lung cancer, or at least catch it early?

No. Quitting is really the only way to cut the risk of lung cancer, said Dr. Michael Thun, who heads epidemiology research for the American Cancer Society.