"Do electronic cigarettes impart a lower potential disease burden than conventional tobacco cigarettes?: Review on e-cigarette vapor versus tobacco smoke"
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Smoking kills 100,000 people in the UK every year, so we support any effective measure which can help reduce this devastating impact. George Butterworth, Cancer Research UK The findings come as the UK approaches the last day that branded cigarette packs will be available, May 19
They also do not produce any harmful secondhand smoke (only vapor)
As it was mentioned above, smokers, who are smoking about a pack per day are exposed about 600 times per month and approximately 7000 times per year for these warnings Based on this it can be suggested that the heavy smokers develop a habituation and immunity to the warnings due to their familiarity with the warnings