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The agency says the vast majority of the patients are males and most of them are 18 to 34 years old, but some of those who have become sick are young teenagers

Special charcoal in the filter charcoal efficiently cools the tobacco smoke, additionally reduces the coal-tar and nicotine level, and also improves the taste, thus making the smoking process milder and more pleasant

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By filtering out some of these particles, filters can change the ratio of particles to gases in the smoke

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Adult males with past year AMI were more likely to have smoked in the past month than adult males with no mental illness (37.4 vs