http://www.drugabuse.gov/publications/s ... rugs-brain
http://www.csun.edu/~vcpsy00h/students/drugs.htmWhen some drugs of abuse are taken, they can release 2 to 10 times the amount of dopamine that natural rewards do.15 In some cases, this occurs almost immediately (as when drugs are smoked or injected), and the effects can last much longer than those produced by natural rewards. The resulting effects on the brain's pleasure circuit dwarfs those produced by naturally rewarding behaviors such as eating and sex.16,17 The effect of such a powerful reward strongly motivates people to take drugs again and again. This is why scientists sometimes say that drug abuse is something we learn to do very, very well.
Amphetamines, Cocaine, and nicotine are the three common drugs which actually increase the natural neurotransmitter Dopamine in the brain. These drugs are considered stimulants. The problem with this otherwise advantageous effect is that when dopamine is released beyond natural homeostatic protection of the endocrine system, the body is not allowed to sleep or rest. The brain needs to go through its normal cycle of conscious states. If it becomes forced by continuous stimulants to bypass the states achieved during rest and sleep, the brain will force the issue. When this happens, the individual will begin to have waking dreams, a state almost identical to psychosis. Unconscious and extremely violent behavior is often exhibited.
We know that the same sort of mechanisms involved in the development of tolerance can eventually lead to profound changes in neurons and brain circuits, with the potential to severely compromise the long-term health of the brain. For example, glutamate is another neurotransmitter that influences the reward circuit and the ability to learn. When the optimal concentration of glutamate is altered by drug abuse, the brain attempts to compensate for this change, which can cause impairment in cognitive function. Similarly, long-term drug abuse can trigger adaptations in habit or nonconscious memory systems. Conditioning is one example of this type of learning, whereby environmental cues become associated with the drug experience and can trigger uncontrollable cravings if the individual is later exposed to these cues, even without the drug itself being available. This learned "reflex" is extremely robust and can emerge even after many years of abstinence.
http://www.csam-asam.org/marijuanas-add ... ral-publicChronic exposure to drugs of abuse disrupts the way critical brain structures interact to control and inhibit behaviors related to drug abuse. Just as continued abuse may lead to tolerance or the need for higher drug dosages to produce an effect, it may also lead to addiction, which can drive an abuser to seek out and take drugs compulsively. Drug addiction erodes a person's self-control and ability to make sound decisions, while sending intense impulses to take drugs.
There are four separate lines of research that prove marijuana has all the characteristics of an addictive drug.
Neuroscientists have demonstrated that marijuana affects the brain's Reward Center in exactly the same way as all other known drugs of addiction.
Animal studies have demonstrated consistent patterns of behavior when THC, the main active ingredient in marijuana, is given twice a day for one week and then suddenly withdrawn
Clinical reports of humans reveal a similar pattern of withdrawal symptoms during the first weeks of abstinence, including
http://www.sciencedaily.com/releases/20 ... 151451.htm
Some interesting studies here as well:A team of Duke University Medical Center and Australian scientists has found that addictive drugs may have hijacked the same nerve cells and connections in the brain that serve a powerful, ancient instinct: the appetite for salt.
http://www.bnl.gov/medical/RCIBI/addiction.asp
Such this one doing brain imaging:
http://www.bnl.gov/bnlweb/pubaf/pr/PR_d ... ?prID=1355
Riding a horse is very much a different thing than playing Russian Roulette with drugs. The only concept shared is the idea of risk. And to that point, why live at all? As life obviously brings risk and death. It is a stupid argument.
Giving a child Cocaine has no relavence to putting them on a horse. Riding horses does not induce poor judgement. Taking Drugs induces reductions in ability to reason and perform valid judgements. Drugs also come with a tendancy to physically promote further use. This in turn encourages further dependancy, as well as increased (or in some cases permanent) periods of impaired function which in turn exponentially raises risk to the person involved and those around them as the cycle continues.
I also know that you think drugs are ok based on your statements. I do not think they are ok. You can believe as you wish and provide whatever encouragment you wish to all your friends and family to take drugs. That is your right. Odds are, if they take you up on it, their lives will collapse around them, and probably they will take some other folks down with them.
I think you could get it over quicker, just by bringing all these folks you know together in a room, and then you could turn out the lights and begin randomly firing a gun for 5 minutes. It would probably even give you a dopamine rush without having to take any drugs. What a bonus. Or, you could all go ride horses, where I predict a much lower loss rate, but you would still get the dopamine.