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New study confirms that chemicals in electronic
cigarettes pose minimal health risk

E cigarette users can breathe a little easier today. A study just released by Professor Igor
Burstyn, Drexel University School of Public
Health, confirms that chemicals in electronic
cigarettes (e cigarettes) pose no health concern
for users or bystanders. This is the first
definitive study of e cigarette chemistry and
finds that there are no health concerns based
on generally accepted exposure limits.

E cigarettes are devices that heat a nicotine
solution to create an aerosol (called “vapor”) that the user inhales, similar to smoking a
cigarette. They are used as a low risk substitute for smoking by millions of former
smokers, and their increasing popularity seems to account for the current downward trend
in smoking in the U.S. and some other countries. While experts agree that the risks posed
by e cigarettes are significantly less than those posed by smoking, there had been some
debate about how much lower the risk was.

By reviewing over 9,000 observations about the chemistry of the vapor and the liquid in e
cigarettes, Dr. Burstyn was able to determine that the levels of contaminants e cigarette
users are exposed to are insignificant, far below levels that would pose any health risk. Additionally, there is no health risk to bystanders. Proposals to ban e cigarettes in places
where smoking is banned have been based on concern there is a potential risk to
bystanders, but the study shows there is no concern….

Howstuffworks “how electronic cigarettes work”

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Lighting a traditional cigarette causes the tobacco to burn, releasing smoke that contains nicotine. The user breathes in the smoke to deliver nicotine to the lungs. An electronic cigarette doesn’t rely on this process of combustion. Instead, it heats a nicotine liquid and converts the liquid to a vapor, or mist, that the user inhales. Depending on the e cigarette, the user may simply inhale from the cartridge to begin the vaporization process, though some devices have a manual switch that activates the vaporizer inside.

An e cigarette has three main parts

  • a rechargeable lithium battery
  • a vaporization chamber
  • a cartridge

The lithium battery powers the e cigarette and can be charged using a charger similar to those used for cell phone batteries. The charged battery is connected to the vaporization chamber, a hollow tube that contains electronic controls and an atomizer the component that creates the vapor. Before the user activates the device, he or she attaches a cartridge containing nicotine liquid to the vaporization chamber. The tip of the cartridge serves as the e cigarette’s mouthpiece.

E cigarette users inhale the way they would with a regular cigarette. This inhalation activates the atomizer to heat the liquid in the cartridge and convert the liquid to a vapor. Inhaling this vapor through the mouthpiece delivers nicotine to the lungs, and the user exhales vapor that looks much like a cloud of cigarette smoke.

Fans of e cigarettes say they enjoy many of the same sensations as tobacco smokers holding the device in their hand, inhaling and exhaling. Many e cigarettes have a light emitting diode (LED) on the end that lights up when the user inhales, simulating flame. (Artificial flame is the only safe kind when using an e cigarette trying to light the device could cause the battery to ignite and explode.)

The liquid or “smoke juice” that fills the cartridges is usually propylene glycol, an additive that the FDA has approved for use in food. (Fog machines that create a smoky atmosphere at stage shows also use propylene glycol.) Consumers can buy cartridges containing different amounts of nicotine, or no nicotine at all. Manufacturers usually add flavorings to the liquid. Options range from tobacco and menthol flavor to mint, chocolate, coffee, apple, cherry and caramel.

E cigarette companies sell their products in retail stores, but also, increasingly, online. A wide array of models and brands are available. Some mimic the appearance of tobacco cigarettes, while others look like cigars, pipes and even pens. Prices vary, ranging from $40 to $120 for a starter kit, which usually includes a charger and a few cartridges along with the e cigarette. Cartridges typically last about as long as a pack of 20 tobacco cigarettes and sell for about $10 each. Consumers also can purchase bottles of e liquid and refill the cartridges themselves. This reduces the cost of use, generally making e cigarettes cheaper to use than tobacco cigarettes.

But even if they’re affordable and fun to use, are e cigarettes safe? Some health experts are concerned about marketers promoting them as a healthier alternative to tobacco. So before you trade in your pack of smokes for the electronic version, read on as we fill you in on the potential health risks of e cigarettes.