I just did a brief video for Swedish Medical Center on the issue of low dose CT screening for lung cancer, which has been proven to improve survival.  Though Dr. Otis Brawley, Chief Medical Officer of the American Cancer Society, just wrote a book about the risk of over-diagnosis of cancer, the ACS has just officially endorsed lung cancer screening, recognizing its value.

The only problem is that it really isn't being done. I discuss a bit on the resistance to screening here:

I hope you find it interesting. Sadly, much of medicine is a combination of science and economics.