How weather increases the risk of cancer

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Living in a cold climate could make people more likely to get cancer, people are at greater risk in colder countries because of their genes. The same genes which stop human cells from dying in freezing temperatures are also linked to breast and bowel cancer and leukaemia. A researcher says the genes contributing to cooler climates are the same which increase the risk of malignant tumours forming in the body.

Genetic variants found to be beneficial in extreme environments, can also predispose for cancer. Cell resistance at low temperatures and at high altitude probably increases the probability for malignancy.’Previous research from 2010 found grim weather in northern parts of the world may make men more vulnerable to prostate cancer, perhaps due to a lack of vitamin D from the sun.

However the new study – which compared international rates of cancer with 240 genetic studies of cancer and seven others in cold and high-altitude countries – suggests where people live affects their genes.Extreme cold weather can cause human cells to die, so that people in freezing countries have genetic mutations to prevent cell death and repair DNA.
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