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Cancer
1. Low- and middle-income countries accounted for 53% and 56%, respectively, of the 10 million cases and 7 million deaths due to cancer in 2000. By 2020, the total number of new cancer cases will rise by 29% in developed countries and by 73% in developing countries. Also by 2020, overall mortality from cancer will increase by 104%, and the increase will be fivefold higher in developing than in developed countries. "Western" lifestyle changes will be responsible for the increased incidence of cancers of the breast, colon, and prostate, but historic realities, sociocultural and behavioral factors, genetics, and poverty itself will also have a profound impact on cancer-related mortality and morbidity.
2. While infectious causes are responsible for <10% of cancers in developed countries, they account for 25% of all malignancies in low- and middle-income countries. Infectious causes of cancer such as human papillomavirus (cervical cancer), hepatitis B virus (liver cancer), and Helicobacter pylori (stomach cancer) will continue to have a much larger impact in developing countries.
3. Environmental and dietary factors, such as indoor air pollution and high-salt diets, also help account for increased rates of certain cancers (e.g., lung and stomach cancers). Tobacco use (both smoking and chewing) is the most important source of increased mortality from lung and oral cancers. In contrast to decreasing tobacco use in many developed countries, the number of smokers is growing in developing countries, especially among women and young people.
4. For many reasons, outcomes of malignancies are far worse in developing countries than in developed nations. Health systems in poor countries simply are not capable of early detection; 80% of patients already have incurable malignancies at diagnosis. Treatment of cancers is available for only a very small number of mostly wealthy citizens in the majority of poor countries, and, even when treatment is available, the range and quality of services are often substandard.
Определите основную идею текста.
Some types of cancer are spread more often among people living in very poor countries because of their bad living conditions.
Mortal outcomes of cancer are far worse in developing countries because of poverty of their citizens and bad quality of medical services.
It is reported that cancer cases are especially high and are going to rise in developing countries in comparison with developed ones.
Nowadays cancer diagnosis and cure are complicated by people’s income level, lifestyle, sociocultural and behavioral factors and genetics as well as the quality of medical services.
