Smoking cessation aid is the most commonly prescribed method of smoking cessation in the United States, according to the Centers for Disease Control and Prevention (CDC).
It is also the one of the most popular methods for helping people quit.
However, there is a growing debate about whether e-cigarette smoke is actually harmful.
What is e-cigs?
E-cigarettes are nicotine-free, portable devices that deliver nicotine directly to your lips and throat, thereby eliminating the harmful effects of cigarette smoke.
They are popular among young people and those who have recently started smoking.
However they have been found to contain carcinogens and other chemicals that are potentially harmful to human health.
The FDA has proposed regulations that would limit the amount of nicotine and other additives in e-cig products to prevent them from being harmful to people.
Some researchers are also sceptical about the long-term health effects of e-liquid, arguing that it has been shown to cause respiratory irritation, nausea and other health problems in animals.
In fact, in a study published in the British Medical Journal in January, researchers found that e-liquids can increase the risk of lung cancer.
Some have called for a ban on e-vapor, claiming that it could be linked to cancer, obesity and even death.
In this article, we take a closer look at the science of e