What is the Biggest Cause of Cancer?

While it’s certainly true that global lifestyle related diseases like cancer are on the rise, the biggest risk factor for cancer is age.

lifestyle, diseases, cancers, cancer risk factor, ageThe simple fact is that more people are living long enough to develop cancer because of our success in tackling infectious diseases and other historical causes of death such as malnutrition. It’s perfectly normal for DNA damage in our cells to build up as we age, and such damage can lead to cancer developing.

We’re also now able to diagnose cancers more accurately, thanks to advances in screening, imaging and pathology.

Yes, lifestyle, diet and other things like air pollution collectively have a huge impact on our risk of cancer – smoking for instance is behind a quarter of all cancer deaths in the UK – but that’s not the same as saying it’s entirely a modern, man-made disease. There are plenty of natural causes of cancer – for example, one in six worldwide cancers is caused by viruses and bacteria.

What is the Biggest Cause of Cancer?

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