A new World Health Organization study found that over a third of new cancer cases could be prevented through modifications to lifestyle and environmental factors. The analysis of all new cancer cases in 2022 estimated that 37% were linked to preventable causes including tobacco, alcohol, weight, physical inactivity, air pollution, ultraviolet radiation, and infections.
The study examined 30 preventable causes and identified tobacco as the leading preventable cause of cancer, globally responsible for 15% of all new cancer cases. Three cancer types—lung, stomach, and cervical cancer—accounted for nearly half of all preventable cancer cases. Dr. Isabelle Soerjomataram, senior author of the study, stated, “Addressing these preventable causes represents one of the most powerful opportunities to reduce the global cancer burden.”
According to Farhad Islami of the American Cancer Society, the new WHO estimates are consistent with previous estimates from his organization, which found that 40% of all cancer cases and almost half of all cancer deaths in the U.S. are attributable to potentially modifiable risk factors. Islami noted that the prevalence of excess body weight is higher in the U.S., while the prevalence of cancer-causing infections is lower compared to many other countries. “It’s clear from both the previous American Cancer Society research as well as the new WHO analysis that people can substantially reduce their cancer risk by adopting a healthier lifestyle,” Islami said.
Implementing Prevention
According to Dr. Lorraine Heyne, a Houston Methodist oncologist, substantial emphasis is placed on both cancer prevention and treatment in the U.S., though far more money is spent on treatment after cancer is diagnosed. Heyne stated that about 85% of lung cancer cases in America are related to smoking, with smoking being the most impactful preventive measure. Moderate exercise, such as brisk walking for two or three hours per week, and weight loss are also important prevention measures. “Simple things that are mentioned in this article are vaccinations, which are dirt cheap and are already prevention,” Heyne said. She emphasized that lifestyle changes, particularly quitting smoking, are difficult to implement, but noted that obesity, weight gain, and lack of exercise present even greater challenges for individuals.
This article is an AI-assisted summary. All facts and figures are drawn from the original report: https://us.headtopics.com/news/over-a-third-of-cancer-cases-could-be-stopped-with-79376822