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Blame Your Genes if You Smoke Too Much

Smokers who find it hard to cut down or quit may be able to blame their genes, new research suggests. Scientists identified three genetic mutations that increase the number of cigarettes people smoke a day.

And several genes appear to dictate how likely you are to take up smoking and how easily you can quit. Three separate studies collected data from 140,000 people, with the results published in the journal Nature Genetics.

A previous study two years ago found a common single-letter change in the genetic code linked to nicotine addiction and lung cancer risk.

This new research confirms this discovery and also pinpoints two more genetic variants that seem to increase cigarette consumption among smokers.

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