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.
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.
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.
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 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
Originally posted by LargeFries
reply to post by lcbjr1979
a cigarette gives a wise man time to think, and a fool, something to put in his mouth.
The remarkable protective effects of nicotine — the addictive chemical in tobacco — on the brain are continuing to surprise scientists. One recent study has found that one of nicotine's metabolites, cotinine, may improve memory and protect brain cells from diseases such as Alzheimer's and Parkinson's. Another new study shows that nicotine can help improve some of the learning and memory problems associated with hypothyroidism. Such studies suggest that nicotine — or drugs that mimic nicotine — may one day prove beneficial in the treatment of neurological disorders.
"These findings don't mean people should smoke," warns neuroscientist Michael Kuhar of Emory University. "Any benefits from the nicotine in cigarettes or other tobacco products are far outweighed by the proven harm of using those products. But pure nicotine-like compounds as medications do show promise for treating human disorders."
3. Smoking lowers the risk of obesity.