Despite decreases in cancer death rates nationwide, a new report shows they are higher in rural America than in urban areas of the United States.

The report released Thursday by the Centers for Disease Control and Prevention found that rural areas had higher rates of new cases as well as deaths from cancers related to tobacco use, such as lung and laryngeal cancers, and those that can be prevented by screening, such as colorectal and cervical cancers.

Differences in the incidence of cancer, or the rates of new cases, could arise because of risk factors such as smoking, obesity and a lack of physical activity, the report said.

But differences in the death rates could result from disparities in access to health care and timely diagnosis and treatment, researchers concluded.

A higher percentage of rural Americans are uninsured, limiting their access to preventive services covered by insurance, according to federal health data.

“While geography alone can’t predict your risk of cancer, it can impact prevention, diagnosis and treatment opportunities – and that’s a significant public health problem in the U.S.,” said Anne Schuchat, CDC’s acting director.

“Many cancer cases and deaths are preventable, and with targeted public health efforts and interventions, we can close the growing gap between rural and urban Americans.”

The latest report is the CDC’s first complete description of cancer incidence and mortality in rural and urban America. It adds to the troubling picture of poor health in rural parts of the country, where people are older, poorer and sicker.

More than 46 million Americans, or 15 percent of the country’s population, live in rural areas. They face numerous health disparities compared with their urban counterparts, and often are most in need of health-care services, yet have the fewest options available.

As a consequence, a CDC report found this year, life expectancy is declining for rural Americans; they are more likely to die from the top five causes of death, including cancer, than their urban counterparts.

And if Congress passes either the House or Senate Republican health-care bill, vulnerable rural populations will only be worse off, said Maggie Elehwany, vice president of government affairs and policy at the National Rural Health Association.

Rural communities need health education and timely access to care, including screening and other preventive services, she said.

Seventy percent of the counties where insurers have pulled out of Affordable Care Act insurance exchanges are rural counties, Elehwany noted.

The pending legislation in Washington would create a greater crisis in such areas, because higher costs and deductibles would mean fewer people could afford insurance, thereby putting even more pressure on the shrinking pool of rural hospitals, she warned.

Many cancers are caused by risk factors, such as smoking, obesity, physical inactivity, alcohol use and excessive sun exposure. Some public health programs aimed at health education and screening to prevent cancer are targeted for cuts in the Trump administration’s budget proposal for CDC.

The plan would cut $1.2 billion – 17 percent – from the agency’s fiscal 2018 budget. If implemented, it would result in the CDC’s lowest budget in more than 20 years.