LONDON — Global cancer cases are projected to rise 75 percent by 2030, in part because many other diseases are being stamped out and more developing countries are adopting Western lifestyles linked to cancer, international health experts reported.
While population growth and aging explain much of the increase, at least one-fifth of the new cancer cases will likely be due to preventable factors, the researchers predict.
Cancers that are caused by infections, such as cervical cancer and some liver and stomach cancers, are falling. But experts say that decline will be outpaced by a surge in cancers linked to bad diet and exercise habits, smoking and drinking too much alcohol, such as cancers of the lung, colon and breast.
Researchers estimate that by 2030, the number of people affected by cancer in some of the poorest countries will increase by more than 90 percent. Previous health initiatives to save people from dying of infectious diseases such as malaria or AIDS also mean they are living long enough to develop cancer, which is normally associated with aging.
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