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Our data strongly suggest that cigarette smoking induces structural and functional changes in mitochondria resulting in a pro-inflammatory phenotype of airway epithelium in severe COPD patients, and that these are persistent, as they are still present upon smoking cessation

About this article Cite this article Alnima, T., Meijer, R.I., Spronk, H.M

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Cigarette smoke contains harmful chemicals that reduce blood flow to your gums, making them more vulnerable to gum disease, tooth decay, and even oral cancer

As a smoker for 42 years, I've tried to quit a few times sometimes for months at a time but I always found a reason to light up again