Global burden of cancer: opportunities for prevention

Source: The Lancet, Volume 380, Issue 9856, Pages 1797 - 1799, 24 November 2012 In The Lancet, Isabelle Soerjomataram and colleagues report that about 169 million years of healthy life were lost due to cancer worldwide in 2008 alone, based on a summary measure (disability-adjusted life-years [DALY] lost) that combines years lived with disability and years of life lost because of premature death. By contrast with mortality rates and counts, which emphasize deaths occurring at old ages, DALY give more weight to deaths occurring at young ages at which people are more likely to be working, raising children, and supporting other family members. Worldwide, the highest DALY rates were noted in eastern African countries (eg, Uganda, Zimbabwe, and Zambia) in women and in several high-income and middle-income countries (eg, Hungary and Uruguay) in men. Despite the substantial limitations inherent in the modeling of sparse cancer registry data and various assumptions about the natural history of every disease and related variables, these findings emphasize the growing burden of cancer in economically developing countries. This burden is partly due to the ageing and growth of the population and marketing-driven adoption of unhealthy lifestyles such as tobacco use and consumption of high-calorie food, as well as limited progress in reduction of infection-related cancers.2 Opportunities exist to reduce these major risk factors and the associated cancer burden through broad implementation of proven interventions specific to every country's economic development level. These interventions include tobacco control, improvement of opportunities for physical activity and healthier dietary patterns, [...]

2012-11-28T11:10:26-07:00November, 2012|Oral Cancer News|

Charting the path from infection to cancer

Source: www.cancer.gov/ncicancerbulletin Author: Eleanor Mayfield Few people associate infection with cancer, but close to one-fifth of all cancers in the world are caused by infectious agents, including viruses, bacteria, and other microbes. In developing countries, the number is higher—about one in four—while in industrialized countries, such as the United States, it is about one in 12. Infectious agents that can cause cancer are extremely common, infecting millions of people around the world. Yet it is rare and takes a long time for an infection to develop into cancer. “You need a lot of things to happen, or not happen, to get from an infection to cancer,” said Dr. Douglas R. Lowy, chief of NCI’s Laboratory of Cellular Oncology and a leader in the molecular biology of tumor viruses. The microbes responsible for most of the global burden of infection-associated cancer are: the bacterium Helicobacter pylori, which causes gastric cancer; cancer-causing strains of the human papillomavirus (HPV), which cause cervical cancer and other cancers; and the hepatitis B and C viruses, which cause liver cancer. These four microbes alone cause more than 15 percent of all cancers worldwide. Other cancers known to be associated with infectious agents include leukemia and lymphoma; anal, penile, vaginal, and vulvar cancer; and tongue and throat cancers. Last week, researchers reported new evidence linking aggressive prostate tumors to a virus. Role of the Immune System Microbes can lead to cancer by a variety of mechanisms that are not yet fully understood, explained Dr. Allan Hildesheim, chief [...]

2009-09-23T08:59:07-07:00September, 2009|Oral Cancer News|
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