Earlier detection, improved treatments and a drop off in smoking have prevented 4.5 million cancer deaths since 1991, according to the American Cancer Society Journal Cancer. But the disease remains one of the nation’s leading causes of death, and the journal notes “alarming disparities persist” in cancer rates. Native American people have the highest cancer mortality, in some cases two to three times the rates of white people. The Black mortality rate is double that of whites for some cancers. April is National Cancer Prevention and Early Detection month, recognizing the opportunities people have to guard against cancer, according to the Prevent Cancer Foundation. Sources: American Cancer Society Journal Cancer, Prevent Cancer Foundation.