birguslatro: Birgus Latro III icon (Default)
From here...

http://www.theverge.com/2016/11/4/13518016/smoking-damage-cancer-risk-dna-cell-mutations

"They found that for every 50 cigarettes smoked, there is one extra DNA mutation for each cell in the lungs. Over the course of a year, this means that someone who smokes a pack a day (20 cigarettes) has 150 extra mutations per cell in the lung, 97 per larynx cell, 23 per mouth cell, 18 per bladder cell, and six per liver cell."

And: "The good news for smokers, though, is that it’s never too late to quit. Although smoking causes regular DNA mutations, as soon as people give up cigarettes, the mutations stop, too. One UK study from 2004 found that those who quit smoking at age 30 nearly eliminate the risk of dying prematurely, while those who quit at 50 halve it."

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August 2017

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