Chronic illness: Bad Genes vs Poor Lifestyle

“Lifestyle behaviors and environmental factors account for around 70-90% of cancer cases, according to new research published in the journal Nature.

Researchers say up to 90% of cancer cases are caused by lifestyle and environmental factors, such as smoking.

The study contradicts a study published in the journal Science in January, which suggested the majority of cancer cases are down to “bad luck.”

In that study, Johns Hopkins researchers claimed 65% of cancer cases are a result of random DNA mutations, while the remaining 35% of cancer cases are explained by a combination of these mutations and environmental and hereditary factors.

The research spurred much debate, with many scientists arguing against the “bad luck” theory.
But Song Wu, PhD, lead author of this latest study and assistant professor of the Department of Applied Mathematics and Statistics at Stony Brook University in New York, notes that scientists had not conducted an alternative analysis to determine the extent to which external risk factors contribute to cancer development. To read more of this article, click here.