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This includes the cost of treating tobacco-related diseases such as chronic obstructive pulmonary disease, and ischaemic heart disease, as well as the productivity losses from premature illness and death

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Not all yellow teeth from smoking are equally severe, and understanding where you fall on the spectrum helps determine which treatments will deliver the best results for your specific situation

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This results in much longer half-life, and a much longer lasting psychological imprint of dopamine in the reward circuits