Tobacco, alcohol are main causes of cancer worldwide: Study – Medical Xpress

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August 19, 2022

Nearly half of cancers worldwide can be traced back to a known risk factor, primarily tobacco or alcohol, a huge global study found on Friday, which said that behavioral changes can help reduce the threat of disease.

The study—published in The Lancet and conducted as part of a vast research program funded by the Bill Gates Foundation—concluded that 44.4 percent of cancer deaths worldwide were attributable to a known risk factor.
The Global Burden of Disease Study is a comprehensive regional and global research program involving thousands of researchers from most countries across the world.
The study analyzed the impact of 34 risk factors and confirmed what is already widely known—that is by far the biggest contributory factor to cancer, accounting for 33.9 percent of cases, followed by alcohol with 7.4 percent.
More than half of all male cancer deaths were attributable to such risk factors, and over a third of female deaths, the study found.
And since “the leading risk factors contributing to global cancer burden in 2019 were behavioral… reducing exposure to these modifiable would decrease cancer mortality” worldwide, the study concluded.
That also meant greater emphasis should be placed on prevention, the study found.
“The burden of cancer remains an important public health challenge that is growing in magnitude around the world,” said Christopher Murray, director of the Institute for Health Metrics and Evaluation at the University of Washington’s School of Medicine and a co-senior author of the study.
“Smoking continues to be the leading risk factor for cancer globally, with other substantial contributors to burden varying.”
However, around half of cancers are not attributable to a known risk factor, meaning and effective treatments must accompany efforts to raise prevention efforts, the study found.


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More than half of China cancer deaths attributable to potentially modifiable risk factors


More information: Khanh Bao Tran et al, The global burden of cancer attributable to risk factors, 2010–19: a systematic analysis for the Global Burden of Disease Study 2019, The Lancet (2022). DOI: 10.1016/S0140-6736(22)01438-6

Journal information: The Lancet

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© 2022 AFP
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