MICROBIO 160 Lecture Notes - Lecture 12: Carcinoid, Small-Cell Carcinoma, Prostate Cancer
1 Mar 2018
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MICROBIO 160 Full Course Notes
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Tobacco use is a risk factor for six of the eight leading causes of death in the world. Tobacco kills up to one in every two users. Smoking can damage every part of the body. Spouses of smokers have an approximately 30% increased risk of lung cancer. Nicotine is the tobacco plant"s natural protection from being eaten by insects. Inhale new nicotine brain releases dopamine failing blood nicotine level brain generates crave (leads back to another inhalation) Within 8 seconds of the first-ever puff, nicotine arrives at brain"s reward pathways. Once inside the brain, nicotine gains direct and indirect control over the flow of more than 200 neurochemicals. Men who do not quit smoking lose an average of 13. 2 years of life; women lose an average of 14. 5 years. Nicotine is by far the most addicting drug we know of. First-time smokers have a 68% chance of sooner or later becoming nicotine dependent.
