{"id":20007236,"date":"2013-12-04T14:34:57","date_gmt":"2013-12-04T14:34:57","guid":{"rendered":"https:\/\/www.thethirdpole.net\/?p=7236"},"modified":"2020-10-01T20:39:13","modified_gmt":"2020-10-01T15:09:13","slug":"study-confirms-cancer-village-fears-in-east-china","status":"publish","type":"post","link":"https:\/\/dialogue.earth\/en\/pollution\/study-confirms-cancer-village-fears-in-east-china\/","title":{"rendered":"Study confirms cancer village fears in east China"},"content":{"rendered":"

Scientists have confirmed a correlation between heavily polluted water and higher incidences of cancer in the Huai river watershed in eastern China<\/strong><\/p>\n

\"400_gp04\"
Cancer victim in Shaoxing, Zhejiang province (Image: Greenpeace)<\/figcaption><\/figure>\n

Long-standing fears about the existence of so-called \u2018cancer villages<\/a>\u2019 in China have been confirmed by a recent study, which links pollution and cancer rates across the provinces of Henan, Anhui and Jiangsu.<\/p>\n

Researchers at the\u00a0China Center for Disease Control and Prevention<\/a>\u00a0examined the relationship between water pollution and cancer rates in the Huai watershed over the past 30 years. An initial report concluded that the most severely polluted areas also showed the highest increase in digestive cancer rates – which researchers have now\u00a0attempted to map<\/a>.<\/p>\n

Professor Gonghuan Yang, formerly deputy director of the China Centre for Disease Control and Prevention, and who led the research, said the overlap between pollution and new cases of cancer in the Huai watershed \u201cstrengthens our evidence that there is a link between water pollution and cancer\u201d.<\/p>\n

The Huai watershed lies between the Yellow River and the Yangtze, and is one of China\u2019s major river systems, covering 274,700 square kilometres. It waters much of China\u2019s commercial grain crops.<\/p>\n

In the 1980s polluting factories such as food processing plants, paper mills and tanneries gathered on the river banks both of the Huai river itself and its tributaries.<\/p>\n

The first \u201ccancer villages<\/a>\u201d the Chinese public heard of were on the banks of the Huai \u2013 these villages, suffering high incidences of cancer, were widely reported in the media during 2004 and 2005. And in the summer of 2005 Professor Yang was dispatched to investigate.<\/p>\n

Both the public and the media had speculated that polluted water was to blame, but although there have been similar cases elsewhere, such as the\u00a0Minamata mercury poisoning case<\/a>\u00a0in Japan, there had never been conclusive proof of a link between pollution and cancer in the Huai watershed.<\/p>\n

An official recognition of sorts of the\u00a0existence of cancer villages<\/a>\u00a0was made by the Ministry of Environmental Protection earlier this year. This followed a number of years of government action to attempt to clean up drinking water.<\/p>\n

In March 2005 an emergency water provision scheme was approved by the state council and the quality of drinking water started to improve in places such as Anhui and Henan. That same month Henan announced a program to ensure the supply of clean drinking water in heavily polluted parts of the Huai and Hai watersheds, covering 800 villages.<\/p>\n

Wang Shiwen, a village doctor in Huangmengying, Henan province, one of the first widely known\u00a0cancer villages<\/a>, said digestive cancer rates had fallen. Prior to 2004 his clinic would see 20 or 30 people with digestive complaints every day. Now it\u2019s no more than five.<\/p>\n

However, in media interviews Professor Yang said the effects of pollution on health are delayed, and that we can expect that over the next ten years the heavily polluted areas of the Huai watershed will still see high rates of cancer.<\/p>\n

Professor Yang also pointed out that although the correlation had been confirmed, it would still be difficult to prove a causal link between cancer and specific sources of pollution in court.<\/p>\n

\u201cThere are various pollutants in the Huai watershed, from paper mills and tanneries and so on, and these are all mixed together,” she told thethirdpole.net<\/i>. “Various disease-causing agents are probably at work at the same time. The measures used today such as chemical oxygen demand and ammonia levels do not identify specific pollutants. The problem is that we have multiple pollutants.\u201d<\/p>\n

For example, the legal case over the Minamata methylmercury poisoning in Japan took 20 years to take shape: from finding the scope of the pollution, to identifying specific diseases and matching them up to corresponding pollutants. \u201cIt really wasn\u2019t easy,\u201d said Professor Yang.<\/p>\n","protected":false},"excerpt":{"rendered":"

Scientists have confirmed a correlation between heavily polluted water and higher incidences of cancer in the Huai river watershed in eastern China<\/p>\n","protected":false},"author":1088,"featured_media":20007238,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[760],"tags":[514,551,20000341],"hashtags":[],"country":[20000110],"class_list":["post-20007236","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pollution","tag-chemicals","tag-health","tag-water-pollution","country-china"],"acf":[],"yoast_head":"\nStudy confirms cancer village fears in east China | Dialogue Earth<\/title>\n<meta name=\"description\" content=\"Scientists have confirmed a correlation between heavily polluted water and higher incidences of cancer in the Huai river watershed in eastern China\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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