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IN DEFENSE OF SMOKERS © 1999, Lauren A. Colby. Version 2.3 |
Chapter 11: Is Nicotine Addictive? |
Chapter 11: Is Nicotine Addictive? I am not going to engage in a philosophical debate over the definition
of "addiction". There is a question in my mind, however, as to whether
nicotine is really the active ingredient in tobacco smoke..
Nicotine is a chemical, C10H 14N 2,
which is found in the tobacco plant. Anti-smokers are quick to point
out that pure nicotine is a poison, used as a pesticide. And it's true
that pure nicotine (a colorless, odorous liquid), is poisonous. According
to the mens that to kill a 180 lb man, he'd have to drink about 80 mg
of the stuff. Many other common substances, however, also have minimum
lethal doses. According to the same source, ingesting a gram of caffeine
is fatal.
In fact, many substances which are beneficial in small quantities are
toxic in large quantities. My mother suffered a stroke some years ago.
Her life was saved, and she recovered, by taking a blood ll, so he doubled
it. My mother began hemorrhaging, and almost died from loss of blood.
The blood thinner, which is life saving in small quantities, proved
toxic in large quantities.
Of course, most of the nicotine in tobacco is lost in the process of
smoking. Only a little finds its way into the smoker's bloodstream.
That small quantity may account for some of the beneficial effects of
smoking, e.g., improved mental concentration. Strangely, fine Havana
cigars, when they were available, contained only 2% nicotine. If, in
fact, nicotine is the reason why people smoke, it seems strange that
people would pay enormous amounts of money for Havana cigars, which
contain so little nicotine.
I question, however, whether nicotine is the active ingredient in tobacco.
If it were, nicotine patches should satisfy a smoker's craving for tobacco;
they don't! In prisons, where, as a part of the punishment, smoking
is sometimes forbidden, the inmates take to smoking corn silk, paper,
string, etc., none of which contain any nicotine.
When I was a young man, there was a chain of tobacco stores which sold
cheap cigars. They were made almost entirely from brown paper, with
only one outside wrapper made from tobacco. I doubt they contained any
significant amount of nicotine. Yet, they were a satisfying smoke.
Recently, anti-smoking forces have suggested taking the nicotine out
of cigarettes, to discourage smoking. This assumes, of course, that
smokers smoke to get nicotine. In their book, "Life Extension", health
writers Durk Pearson and Sandy Shaw, take a different approach. Believing
that smoke is bad for health but that nicotine is not, Pearson and Shaw
suggest that cigarettes be spiked with extra nicotine, so that smokers
will consume fewer cigarettes.
It is not universally accepted, however, that nicotine is the active
ingredient in tobacco smoke. The authors of the widely respected "Merck
Manual" say only that it is "probably" the active ingredient. If, in
fact, the anti-smokers finally succeed in getting the tobacco companies
to remove the nicotine from cigarettes, we will finally find out the
truth. My own bet is that a cigarette without nicotine will probably
be almost as satisfying as one with nicotine. The active ingredient
in smoke is smoke. Recent studies, reported by the National Institute on Drug Addiction
(NIDA), seem to bear out my hunch. These studies suggest that tobacco
contains a monoamine oxidase inhibitor (MAOI). MAOI's are anti-depressants,
which work by increasing serotonin levels in the brain. They are used
in medicine to treat Parkinson's disease, which may explain why a number
of studies have shown that smokers have a far lower rate of Parkinson's
than non-smokers. In any event, the MAOI in tobacco smoke may play as
great a role in smoking as nicotine. |