Originally posted by: xirtam
By the way, the binary figure mentioned isn't even close to 802340827785132993125731246365127647436589437954368256317. All I had to do to figure out the discrepancy was first to note the number of places, and second to check the last digit. Since it's a 0, it's obviously not an odd number, meaning it can't end in 7.
If it weren't for the nicotine, there would be no smokers.
I disagree. Some people smoke because they like smoking. I know some people who have a cigarette maybe 4 or 5 times a year.
Personally, if everyone else is smoking, I find it easier to tolerate the smell if I'm smoking too. So I make them buy me a cigar. Problem solved.
Cigarettes contain 8 to 20 milligrams (mg) of nicotine (depending on the brand), but
only approximately 1 mg is actually absorbed by your body when you smoke a cigarette. So there is still nicotine in the second hand smoke.
Within the body:
Nicotine initially causes a
rapid release of adrenaline, which tells your body to
dump some of its glucose stores into your blood. Nicotine may also increase your basal metabolic rate slightly. Over the long haul, nicotine can increase the level of the "bad" cholesterol, LDL.
Within the brain:
It increases the release of acetylcholine from the neurons, leading to heightened activity in cholinergic pathways throughout your brain. This cholinergic activity calls your body and brain to action, and this is the wake-up call that many smokers use to re-energize themselves throughout the day. Through these pathways, nicotine improves your reaction time and your ability to pay attention, making you feel like you can work better.
It stimulates cholinergic neurons which
promotes the release of the neurotransmitter dopamine in the reward pathways of your brain - This neural circuitry is supposed to reinforce behaviors that are essential to your survival, like eating when you're hungry. Stimulating neurons in these areas of the brain brings on pleasant, happy feelings that
encourage you to do these things again and again. When drugs like cocaine or nicotine activate the reward pathways, it reinforces your desire to use them again because you feel so at peace and happy afterwards.
It releases glutamate, a neurotransmitter involved in learning and memory - Glutamate enhances the connections between sets of neurons. These stronger connections may be the physical basis of what we know as memory. When you use nicotine, glutamate may create a memory loop of the good feelings you get and further drive the desire to use nicotine.
Your brain also makes more endorphins (natural pain killers) in response to nicotine.
This information taken from howstuffworks.com.
You might disagree, but you're wrong. Some people smoke because they like smoking - because of the nicotine, regardless of how often. However, the overwhelming majority develop a strong addiction based on the events above. Without the nicotine, those 5 a year smokers wouldn't like it, and wouldn't smoke at all. Nicotine is what makes smoking enjoyable, but also what makes it addicting.
When kids try smoking very young, whether to impress their peers or because they thought it was cool, or the common excuse "I have to try it at least once before I can dis it" - the changes in the brain as listed above immediately initiate an addiction whether or not they thought smoking was disgusting the first time. And in the case of second hand smoke, those parents who smoke have a higher chance of having kids who smoke. In another smoking thread I posted that whenever I get caught downwind of a smoker, I get an adrenaline rush and my heart quickens - one of the replies was that it was just psychosomatic - I completely disagree, there is still nictonine in that smoke and growing up with a smoking mother, my brain/body has already developed a response to it.