ETS contains the same harmful chemicals that smokers inhale. The study of factors that influence the frequency and distribution of diseases, such as cancer, in an effort to find the cause and therefore prevent them. Any group implementing health care using managed care concepts including pre-authorization of treatment, utilization review, and a fixed network of providers. A statistical measurement of the central tendency or average of a set of values. A chemical added to cigarettes to produce a cool sensation in the throat when smoke is inhaled.
Nicotine acts on several neurotransmitters including acetylcholine and dopamine.
It is toxic at high doses but can be safe and effective as a medicine at lower doses. Nicotine-containing gum that delivers nicotine through the lining of the mouth. It is available without a prescription, marketed as Nicorette. Nicotine-containing inhaler that delivers nicotine in a vapor that is absorbed in the mouth. It is available by prescription only, marketed as the Nicotrol Inhaler.