As the world ages, cancer cases are expected to rise, hitting some countries like a “tidal wave” | Top Vip News



Every year around the world, tens of millions of people are told they have cancer and millions die from the disease. Now, a report from the American Cancer Society projects that by 2050, the number of people with cancer could increase by 77%.

The report, published Thursday in the journal CA: A cancer magazine for doctorsfound that in 2022, the most recent year for which data was available, about 20 million cancer cases and 9.7 million cancer deaths were diagnosed.

These estimates suggest that approximately 1 in 5 people who are alive now will develop cancer during their lifetime, and about 1 in 9 men and 1 in 12 women will die from the disease.

When it comes to the number of cases worldwide, “we believe that number will increase to 35 million by 2050, largely due to the increase in the aging population,” he said. Dr. William Dahutscientific director of the American Cancer Society.

The new report says population growth and aging are key drivers of the size of the global cancer burden, with the global population of around 8 billion people in 2022 projected to reach 9.7 billion in 2050.

But if more people also use tobacco and more have obesity, along with other cancer risk factors, the projected number of cancer cases could rise even further, Dahut warned, especially in low-income countries.

“Many of the cancer-causing factors that we have traditionally seen in high-income countries, such as tobacco and obesity, are now moving to low-income countries,” Dahut said, adding that this trend is worrying. .

“These are countries that do not have the tools to detect cancer in its early stages, treat it properly and prevent it as is often done in other countries,” he said. “We are concerned that we are going to see higher incidence rates, higher mortality rates, particularly in low-income countries, where cancers are now being driven not only by traditional cancer factors but also by external factors such as tobacco and obesity.”

New report includes global data on cancer incidence and death from World Cancer Observatorya database of the World Health Organization.

Data shows that lung cancer was the most frequently diagnosed form worldwide in 2022, with almost 2.5 million new cases and more than 1.8 million deaths.

Overall, the top 10 cancers in both men and women accounted for more than 60% of newly diagnosed cancer cases and cancer deaths, according to the report.

The most common types of cancer are lung cancer, breast cancer in women, colorectal cancer, prostate cancer, stomach cancer, liver cancer, thyroid cancer, cervical cancer, bladder cancer, and non-Hodgkin lymphoma. according to the report. Lung cancer was also the leading cause of cancer death, followed by colorectal, liver, breast in women, stomach, pancreas, esophagus, prostate, cervix and leukemia.

According to the report, cervical cancer was the leading cause of cancer deaths in 37 countries, mainly in sub-Saharan Africa, South America and Southeast Asia. The HPV or human papillomavirus vaccine can reduce a person’s risk of cervical cancer, but globally, only about 15% of eligible girls have received the vaccine, according to the American Cancer Society. There are also disparities in cervical cancer screening.

“Given that more than half of cancer deaths worldwide are potentially preventable, prevention offers the most cost-effective and sustainable strategy for cancer control.” Dr. Ahmedin Jemal, senior vice president of surveillance sciences and health equity at the American Cancer Society and lead author of the study, in a news release. “Eliminating tobacco use alone could prevent 1 in 4 cancer deaths or approximately 2.6 million cancer deaths per year.”

Although the causes of cancer can be complex, genetic or environmental, “about 50% of cancers can be prevented.” Dr Bilal Siddiquian oncologist and assistant professor at the University of Texas MD Anderson Cancer Center, who was not involved in the new report, said in an email.

“All patients should talk to their doctors to ensure they receive age-appropriate cancer screening, and it is important to make key lifestyle changes that can reduce our risk of cancer, such as quitting smoking, reducing of alcohol and staying physically active,” he said. saying.

Tobacco remains “the leading cause of lung cancer,” according to the report, adding that the disease is largely preventable through effective tobacco control policies and regulations. As for other types of cancer, reducing excess body weight, reducing alcohol consumption, not smoking, and increasing physical activity can help reduce a person’s risk.

“While we see lung cancers that are not related to smoking, the number one cause of lung cancer is smoking. And obviously, there is still a lot of work to be done in the U.S. and elsewhere to continue to address the tobacco epidemic,” said Dr. Harold Burstein, an oncologist at Dana-Farber Cancer Institute and a professor at the Harvard School of Medicine. Harvard, which was not involved in the new American Cancer Society report.

“Interestingly, pollution and other airborne environmental exposures likely increase the risk of lung cancer in many parts of the world. So efforts to improve clean air or reduce exposure to air pollution are another really important thing to think about,” Burstein said.

“Other things people can do to reduce cancer mortality include early cancer screening and better outcomes. “In the United States, we have very important opportunities for screening through mammography, colonoscopy, and Pap testing, but they are still underutilized by many parts of our society,” he said. “In more advanced economies, such as the United States, we have seen notable declines in mortality rates from breast cancer and colon cancer, with probably about half of that figure due to early detection.”

New report details how many low-income countries have high cancer mortality rates despite low cancer incidence, largely due to lack of access to screening tools to detect the disease early and advanced treatment services .

Get the weekly CNN Health newsletter

The report helps highlight not only these global trends in cancer, but also how cancer is becoming a “bigger health problem” in low- and middle-income regions of the world, Burstein said.

“Cancer is a tidal wave that reaches their communities,” he said.

“Screening mammograms are not performed in most of sub-Saharan Africa. They don’t have screening mammograms in China. They don’t have routine colonoscopies in many parts of the world,” she said. “The report says cancer prevalence will double in low- and middle-income countries over the next 25 years. And so, addressing both the increasing prevalence, the need for early screening and detection, and the complex treatment and care of cancer patients will be a huge challenge for healthcare systems that are already stretched to the limit.”

Leave a Comment