Blog | Tuesday, June 5, 2012

QD: News Every Day--Cancer rates rise by 75% even as specific types of disease fall


Reductions in infection-related cancers in developed are offset globally by an increasing number of new cases occurring as less-developed nations adopt westernized lifestyles and the morbidity that follows.

Researchers from the Section of Cancer Information, International Agency for Research on Cancer applied the Human Development Index (HDI) as an indicator of socioeconomic development, and rates of cancer incidence and mortality as markers of the extent of the cancer transition globally.

Results appeared in The Lancet Oncology on June 1.

Worldwide, rates of colorectal cancer, female breast cancer, female lung cancer and prostate cancer will rise in highly developed areas. Meanwhile, stomach cancer, cervical cancer and lung cancer in men will fall in highly developed areas.

Assuming rates in 2030 of all other cancers remain as estimated in 2008, cancer's annual incidence will rise by 75% from 2008, to affect 22.2 million people by 2030.

The authors wrote, "Some cancers seem to be positively associated with the level of socioeconomic development and colorectal cancer is a good example of this, with 40% of the global burden occurring in very high HDI regions despite such regions comprising only 15% of the world's population. The reasons for this association are not clear, although dietary and metabolic factors associated with a so-called western lifestyle might be of particular relevance."