Early Detection | featured news

Cancer-related deaths in the United States are dropping — and have been for the past two decades — according to this year's annual report by the American Cancer Society. And some of the largest reductions came in cases involving the biggest killers, including breast, colon, lung, and prostate cancers. The decline came thanks mostly to early detection by increasingly sophisticated screening methods, and advances in treatment.

Brain scans that detect early warning signs of Alzheimer's may be available in the United States as soon as this year.

In healthy women, screening for the deadly malignancy actually does more harm than good, a study shows.