In addition, ACS volunteers will conduct smoking cessation and prevention activities for persons of all ages at shopping malls, work sites, hospitals, military installations, and other locations. The study findings varied twofold, from a low of about 16 percent in Utah to a high of about 32 percent in Kentucky. Childhood exposure to ETS is associated with a number of health problems including an increased risk of sudden infant death syndrome, increased lower respiratory tract infections, increased number and severity of asthma attacks, and middle ear infections. Smokers may block the nearly invisible vents with their fingers or lips, thus increasing tar and nicotine exposure. The study also found Vents are used in cigarette filters to lower tar and nicotine yields.
Vents are very difficult to see.
For some brands, the smoker would need to take off the filter wrapping and hold it up to the bright light and look through a magnifying glass. Without being consciously aware of it, many smokers block filter vents with their lips or fingers and in so doing may increase the tar, nicotine, and carbon monoxide they inhale from their cigarettes. The relative risk for lung cancer has increased despite greater use of filtered and lower tar and nicotine cigarette brands. Possible explanations for this increased risk are that smokers may block the vents in the filter portion of a cigarette and may also puff more frequently, and inhale more deeply, thus getting higher levels of tar and nicotine. The study found that pregnant smokers accounted for a sizable and preventable economic burden on the medical care system based on cost estimates derived for 1987 and updated for 1995.