what physical effects does smoking actually have?

Question: I'd like details on the effects of smoking. I head that your blood sugar rises when you smoke? Does it constrict the blood vessels? I'd like to know specific things like that. Not generalized effects like wrinkles, lack of energy etc. I want to know WHY it causes wrinkles and why we have lack of energy and what is actually happening inside the lungs when we smoke. I also heard it can cause bladder cancer. Why? What is happening in the body to cause that? Thanks for your help.

Answers:
Basically, without going into the physics of it, smoking deprives ALL of your body's cells of most of their necessary oxygen, and replaces it with carbon monoxide. Carbon monoxides likes to stay in hemoglobin even more than oxygen does, and so it stays there longer than the cigarette burns. How do you think you would look and feel after smothering yourself to the brink of unconsciousness 20, 30, 40 times a day for 40 years? Think about it! You don't have to pass out to damage your body's cells permanently!

Other Answers:
The website I provided below lists the effects of smoking cigarettes - From Head to Toe
Source(s):
http://quitsmoking.about.com/cs/nicotinepatch/a/healthrisks.htm

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