Many people have a cancer diagnosis or know someone living with cancer, which might make it seem as though the incidence of this disease is on the rise. In this Special Feature, Medical News Today investigates the latest surveillance data and speaks with experts to find out if cancer rates are really increasing.
Cancer impacts people of all ethnicities, sexual identities, and economic backgrounds. Although cancer prevention and treatment strategies have improved over the years, cancer diagnoses appear to be rising.
But have cancer rates really increased? And if so, what factors are playing a role? To try and answer these questions, Medical News Today investigated the latest data and statistics on cancer prevalence and mortality rates.
We also spoke with two experts about cancer rates and the impact COVID-19 may have had on cancer prevention, diagnosis, and treatment.
According to one study published in
Fast forward to 2019, and those numbers had increased significantly, with 23.6 million people receiving a new cancer diagnosis and records documenting 10 million cancer deaths.
The scientists who conducted the research also found that among 22 groups of injuries and diseases studied, cancer was the second leading cause of death, years of life lost, and disability-adjusted life years.
The
- breast cancer (2.26 million diagnoses)
- lung cancer (2.21 million diagnoses)
- colon and rectal cancer (1.93 million diagnoses)
- prostate cancer (1.41 million diagnoses)
- nonmelanoma skin cancer (1.20 million diagnoses)
- stomach cancer (1.09 million diagnoses)
Furthermore, lung cancer caused 1.8 million deaths, closely followed by:
- colorectal cancer (935,000 deaths)
- liver cancer (830,000 deaths)
- stomach cancer (769,000 deaths)
- breast cancer (685,000 deaths)
Yet despite these statistics, the
Factors that may play a role in this decrease include:
- a reduction in the number of people who smoke, as smoking is a leading cause of lung cancer
- the addition of chemotherapy treatment after surgery for breast and colon cancer
- the use of combination therapy for many cancers
- the advancement of prevention and early detection strategies for some cancer types
In addition, the organization reports an increase in the 3-year survival rate for people living with lung cancer. For example, in 2004, 21 in 100 people with a diagnosis of lung cancer were living 3 years after diagnosis. In 2018, that number rose to 31 in 100 people.
Progress with diagnosing lung cancer in the localized stage and improvements in surgical techniques and treatment medications may play a role in the improved survival rate.
Although the overall mortality rate from cancer may be decreasing, certain types of cancer are on the rise. For example, according to
Between 2015 and 2050, the
However, the CDC projects that colorectal, prostate, and female breast cancers will rise, and cancer diagnoses in older adults will increase due to an aging population.
In addition, research indicates that from 1973 to 2015, certain subtypes of cancer — specifically carcinoma of the kidney — have risen in adolescents and young adults in the U.S., with an overall cancer rate increase of
Although we are making progress with some types of cancer, the
These include the fact that people are living longer — as a person’s cancer risk
In addition, continued difficulties with accessing quality healthcare due to socioeconomic challenges or racial bias may contribute to an increase in cancer rates.
For example, according to a
Dr. Susan Pandya, head of cancer metabolism global development oncology and immuno-oncology at Servier Pharmaceuticals, told MNT:
It may be many years before surveillance data accurately depict COVID-19’s impact on cancer rates. Still, reduced access to healthcare facilities because of pandemic-related closures and reluctance to attend medical appointments because of fear of exposure to SARS-CoV-2 may have negatively impacted cancer prevention, diagnosis, and treatment.
He added: “I worry that screening will also be impacted — mammograms, colonoscopies, CT scans for lung cancer, or even visits to the gynecologist. For example, we’ve gone to virtual visits for many of our medical oncologists, almost all of our genetics, almost all of our cancer patient support services, but we really can’t do that for radiation therapy or for surgical preop cases. We’ve really been hit.”
Dr. Zinner reported that, as of early- to mid-January, 310 out of 1,800 employees at his place of work — about 17% — were absent due to COVID-19. This included 7 out of 12 radiation therapists.
“Unfortunately, it’s the same in [New York] and Boston. In Boston, they have administrators being used as transport, pushing patients to X-ray and radiation therapy. It’s been dramatic, but hopefully, we’re on the recovery side of Omicron. [B]ut I don’t know for sure,” he said.
Dr. Zinner emphasized that people with cancer were receiving appropriate treatment despite these challenges.
Source: Medical News Today
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