Evaluate the trends in cancer deaths over the past 100 years in the United States.​

A. During almost all of the 20th century, cancer deaths increased, but that trend stopped in 1993, and overall cancer deaths began to decline.
1. The decline is partly attributable to changes in lifestyle, which lower the incidence of cancer.
2. Early diagnosis and more effective treatments have also played a role.
B. Death rates for some types of cancer decreased in the past 50 years.
1. For example, for both men and women, stomach and colorectal cancers have decreased.
2. For women, death from uterine cancer has decreased.
C. However, incidence of some cancers has increased.
1. Liver cancer deaths are increasing.
3. Melanoma, a highly fatal form of skin cancer, is increasing.
4. Cancer of the esophagus is on the rise for men but on the decline for women.
D. Some of the cancers responsible for many deaths have begun to decline.
1. Prostate cancer diagnoses increased sharply during the 1980s but decreased during the 1990s.
2. For men, lung cancer deaths have dropped sharply during the past dozen years, but deaths for women have remained about the same. However, at the present time, lung cancer deaths are the greatest sources of cancer deaths for both men and women in the U.S.