5 benefits of smoking:
1. Smoking lowers risk of knee-replacement surgery
While smokers might go broke buying a pack of cigarettes, they can at least save money by avoiding knee-replacement surgery. Surprising results from a
new study have revealed that men who smoke had less risk of undergoing total joint replacement surgery than those who never smoked.
The study, from the University of Adelaide in Australia, appears in the July issue of the journal Arthritis & Rheumatism. What could be the
connection? Knee-replacement surgery was more common among joggers and the obese; smokers rarely jog, and they are less likely to be morbidly obese.
After controlling for age, weight and exercise, the researchers were at a loss to explain the apparent, albeit slight protective effects of smoking
for osteoporosis. It could be that the nicotine in tobacco helps prevent cartilage and joint deterioration.
2. Smoking lowers risk of Parkinson's disease
Numerous studies have identified the uncanny inverse relationship between smoking and Parkinson's disease. Long-term smokers are somehow protected
against Parkinson's, and it's not because smokers die of other things earlier. [10 Easy Paths to Self-Destruction]
The most recent, well-conducted study was published in a March 2010 issue of the journal Neurology. Far from determining a cause for the protective
effect, these researchers found that the number of years spent smoking, more so than the number of cigarettes smoked daily, mattered more for a
stronger protective effect.
Harvard researchers were among the first to provide convincing evidence that smokers were less likely to develop Parkinson's. In a study published in
Neurology in March 2007, these researchers found the protective effect wanes after smokers quit. And they concluded, in their special scientific way,
that they didn't have a clue as to why.
3. Smoking lowers risk of obesity
Smoking — and, in particular, the nicotine in tobacco smoke — is an appetite suppressant. This has been known for centuries, dating back to
indigenous cultures in America in the pre-Columbus era. Tobacco companies caught on by the 1920s and began targeting women with the lure that smoking
would make them thinner.
A study published in the July 2011 issue of the journal Physiology & Behavior, in fact, is one of many stating that the inevitable weight gain upon
quitting smoking is a major barrier in getting people to stop, second only to addiction.
The relationship between smoking and weight control is complex: Nicotine itself acts as both a stimulant and appetite suppressant; and the act of
smoking triggers behavior modification that prompts smokers to snack less. Smoking also might make food less tasty for some smokers, further curbing
appetite. As an appetite suppressant, nicotine appears to act on a part of the brain called the hypothalamus, at least in mice, as revealed in a study
by Yale researchers published in the June 10, 2011, issue of the journal Science.
No respectable doctor would recommend smoking for weight control, given the toxic baggage accompanying cigarettes. This recent Yale study, however,
does offer an inkling of hope for a safe diet drug to help obese people control their appetites.
4. Smoking lowers risk of death after some heart attacks
Compared with non-smokers, smokers who have had heart attacks seem to have lower mortality rates and more favorable responses to two kinds of therapy
to remove plaque from their arteries: fibrinolytic therapy, which is basically medication; and angioplasty, which removes the plaque by inserting
balloons or stents into the arteries.
There's a catch, though. The reason why smokers have heart attacks is that smoke scars the arteries, allowing fat and plaque to build up in the first
place. So, one theory as to why smokers do better than non-smokers after such therapies is that they are younger, experiencing their first heart
attack approximately 10 years before the non-smoker.
A study published in an August 2005 issue of the American Heart Journal, however, states that age alone is not enough to fully explain the survival
differences and that "the smoker's paradox is alive and well." No alternative theories have been put forth since.
5. Smoking helps the heart drug clopidogrel work better
Clopidogrel is a drug used to inhibit blood clots for those patients suffering from coronary artery disease and other circulatory diseases leading to
strokes and heart attacks. Smoking seems to help clopidogrel do its job better.
A study by Korean researchers in the October 2010 issue of the journal Thrombosis Research builds upon work by Harvard researchers published in 2009
that demonstrates the benefit of smoking at least 10 cigarettes a day. It seems that something in cigarette smoke activates certain proteins called
cytochromes, which convert clopidogrel into a more active state.