Re: schizophrenic brother discharged by his case worker The causes of the very high prevalence of cigarette smoking in individuals with serious mental illnesses are complex and multifactorial. Most of the literature examining reasons for the association between smoking and schizophrenia focuses on the neurobiologic effects of nicotine, such as its interactions with dopaminergic circuits.
[11,13,17-19] Consuming nicotine may ameliorate some of the negative symptoms of schizophrenia, such as amotivation, anhedonia, and social isolation. Nicotine also may improve auditory gating impairments in persons with schizophrenia, which in turn may enhance attention, sensory processing, and the ability to interact with their environments.
[17,18,20] -
http://www.medscape.com/viewarticle/516304 (p. 3)
There's been a lot of research into smoking (particularly cannabis, and heavy tobacco consumption) and mental illness, particularly schitzophrenia - some estimates put use in this population as high as 80%. Much of it has focused on correlations (does heavy tobacco use indicate propensity to or severity of mental illnesses; does cannabis use increase the likelihood of developing a mental illness), genetic predispositions to mental illnesses and to nicotine dependency, the effects of nicotine use on psychotropic & neuroleptic drugs (generally decreases medication half life, requiring higher dosing), and smoking cessation or reduction in the mentally ill.
Only a handful of studies have focused on
why so many people with mental illnesses, particularly schizophrenia, smoke and so heavily. Here are links to a few of them:
http://ajp.psychiatryonline.org/cgi/...ct/150/12/1856 http://archpsyc.ama-assn.org/cgi/content/full/62/6/649 http://md1.csa.com/partners/viewreco...&setcookie=yes
I had no idea about this until a fellow Master's student presented her research in class. She has schizophrenia, and became interested through her own use of tobacco to relieve side-effects of her medication. Hope this helps.
Apologies to the OP for this partial thread hijack.
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