About 22 million men and women have not had a potentially life-saving screening for colorectal cancer.
7 million women 50-74 have not had a recent mammogram.
"It's encouraging to see more adults getting recommended cancer screenings," CDC Director Thomas Frieden, MD, says in a news release. "But we have more to do, especially when it comes to getting more people screened for colorectal cancer, which kills more American nonsmokers than any other cancer."
The researchers used the most recent data available from the 2008 Behavioral Risk Factor Surveillance System to determine the number of people getting screening.
"Tragically, one in three people who should be screened for colorectal cancer have not yet done so, and rates are even lower among Hispanics and blacks," he says. "Each year about 12,000 lives are saved as a result of mammography and an additional 32,000 lives could be saved if every adult aged 50 year or older got tested regularly for colorectal cancer."
After lung cancer, colorectal cancer is the second leading cause of death in the U.S., the report says. Breast cancer is the most commonly found cancer and is the second leading cause of cancer deaths among women in the U.S.
Frieden said in a news briefing that though progress has been made in saving lives, more could be with additional screenings. He said that what's known as the "Katie Couric effect" is still inducing people to get screened for colon cancer.