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Meanwhile, increasing evidence demonstrates the essential involvement of epigenetics in COPD progression and suggests that DNA methylation and histone modifications may provide innovative drug targets to regulate its pathological processes [10,11,12,13]

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That being said, while it is currently considered a safer alternative to smoking, studies indicate that it can potentially cause problems for your oral health in the following ways: It Can Lead to Dry Mouth: The propylene glycol in many electronic cigarettes can cause dryness of the mouth

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