44.4% (4.5 million) of all cancer deaths globally are attributable to risk factors, the study says. These estimates are based on the Global Burden of Disease, Injuries and Risk Factors Report, 2019.
According to the study, nearly half (50.6%) of all cancer deaths in men globally in 2019 (2.8 million) were due to known risk factors, compared to 36.3% of cancer deaths in women (1.5 million) attributable to these factors.
Christopher Murray, Director Institute for Health Metrics and Evaluation at the University of Washington School of Medicine and co-senior author of the study, said, “Smoking is becoming the leading risk factor for cancer globally, replacing other significant contributors to cancer burden.”
In the study, researchers examined how 34 behaviors, MetabolicEnvironmental and occupational risk factors contributed to death and ill health from 23 types of cancer in 2019. Changes in cancer burden between 2010 and 2019 due to risk factors were also assessed.
They found that the leading risk factors for cancer death and ill health globally for both sexes were smoking, alcohol use and high BMI.
The leading cause of risk-attributable cancer deaths for both men and women globally was trachea, bronchus, and lung cancer, accounting for 36.9% of all cancer deaths attributable to risk factors.
This was followed by colon and rectal cancer (13.3%), esophageal cancer (9.7%), and stomach cancer (6.6%) in men, and cervical cancer (17.9%), colon and rectal cancer (15.8%), and breast cancer (11%). .
Between 2010 and 2019, cancer deaths due to risk factors increased by 20.4% globally, from 3.7 million to 4.45 million. Ill health due to cancer increased by 16.8% over the same period, from 89.9 million to 105 million DALYs (Disability-adjusted life years), the Lancet said in a statement. Metabolic risks accounted for the largest increase in cancer deaths and ill health, with deaths increasing by 34.7% (from 6,43,000 deaths in 2010 to 865,000 in 2019) and DALYs increasing by 33.3% (from 14.6 million in 2010 to 19.49 million). added