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And we can stop them. Take Down Tobacco Theyre lying, cheating and fooling people into a lifetime of addiction, disease and death

Another modern myth is the chemical nature of modern tobacco, and it is not a myth, it is our reality

"This is an important finding because we also know that greater tobacco retailer density is more common in low-income neighborhoods and young people are more likely to use tobacco when they live in neighborhoods with a high density of tobacco retailers," said Delnevo, principal investigator of the U.S

Example 1: Consistent Smoking Cigarettes per day: 10 Years smoked: 30 Packs per day = 10 divided by 20 = 0.5 packs per day Pack years = 0.5 multiplied by 30 = 15 pack years Example 2: Heavy Smoking Cigarettes per day: 40 Years smoked: 15 Packs per day = 40 divided by 20 = 2 packs per day Pack years = 2 multiplied by 15 = 30 pack years Example 3: Intermittent Smoking Cigarettes per day: 15 (on average) Years smoked: 25 (with some periods of not smoking) Packs per day = 15 divided by 20 = 0.75 packs per day Pack years = 0.75 multiplied by 25 = 18.75 pack years Factors to Consider When Calculating Pack Years While the formula for calculating pack years is simple, there are some nuances to keep in mind: Inconsistent Smoking Patterns: Some individuals may have smoked heavily at certain times and lightly or not at all at other times