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NEW YORK – DNA methylation at certain sites of the genome influence lung function, an effect that may occur through its effect on cigarette smoking, a new study has found.

Smoking is a major risk factor for lung disease, which is often preceded by a decline in lung function. As smoking is also associated with a number of methylation-level alterations, researchers led by the University of Bristol's Rebecca Richmond sought to examine whether these methylation changes are also linked to lung function.

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