
Constantin Papastefanou from the Aristotle University of Thessaloniki in Greece measured radioactivity in tobacco leaves from across the country and calculated the average radiation dose that would be received by people smoking 30 cigarettes a day. He found that the dose from natural radionuclides was 251 microsieverts a year, compared with 0.199 from Chernobyl fallout in the leaves.
Though the radiation dose from smoking was only 10 per cent of the average dose anyone receives from all natural sources, Papastefanou argues that it is an increased risk. "Many scientists believe that cancer deaths among smokers are due to the radioactive content of tobacco leaves and not to nicotine and tar," he says.
Source: New Scientist
Image: Thomas Hawk / Flickr
Tags: cigarettes | Radiation | Chernobyl
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