Nitrates in water are associated with increased cancer risk

February 21, 2018 16:08

Nitrates in groundwater and drinking water, coming back mainly of fertilizers, "suspected" to increase the risk of cancer. The largest epidemiological study that has ever been conducted in this area shows that there is a link between nitrates and cancer. The results of the work of scientists published in the «International Journal of Cancer» magazine.

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Researchers estimate what quantity of nitrates undergo Danes and compared the results with information about cancer diagnoses in Denmark. They examined the health of 2.7 million Danes over the period from 1978 to 2011 and had a nitrate analysis of more than 200,000 samples of drinking water.

"Every year in 5000 Danes diagnosed with colorectal cancer. The development of this disease may be caused by many reasons. Our research shows that the nitrates in drinking water can be one of these reasons. We have found that those who were exposed to the highest concentration of nitrates in drinking water (above 9.3 mg per liter of water) had a 15% higher risk of developing colorectal cancer, Compared with those who consumed water with lesser amounts of nitrate (less 1.3 mg per liter of water). According to the current standard in drinking water can contain 50 mg of nitrates per liter, but the increased risk of cancer is observed at concentrations greater than 4 mg per liter, "- said the scientists from the Department of Public Health, University of Aarhus.

Standard for drinking water in Denmark and the EU consistent with the recommendations of the World Health Organization. These recommendations have been developed to prevent "blue baby syndrome", in which the poisoning nitartami blocks the oxygenation of the body. This syndrome only occurs in young children and very rarely diagnosed in Denmark.

The study results confirm suspicions that the nitrates increases the risk of colorectal cancer. Health hazard occurs when the nitrates are converted to carcinogens known as N-nitrozosoedineniyav body. Colorectal cancer is one of the most common forms of cancer in Denmark and third in frequency worldwide.

Results of the study indicate that the standard for drinking water by the number of nitrates should be changed to protect people not only from the "blue baby syndrome", but also other chronic diseases.

Source: https://medicalxpress.com/news/2018-02-nitrate-colorectal-cancer.html



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