The real me Posted April 7, 2012 Share Posted April 7, 2012 Yes it does. Caffeine is the world's most widely consumed psychoactive substance. Stop embarassing yourself. I'm not saying that tea and coffee are health drinks but its self evident that they're nothing like crack and heroin etc. Link to comment Share on other sites More sharing options...
Halibut Posted April 7, 2012 Share Posted April 7, 2012 How high do you get? Don't be silly! Caffeine is indisputably psychoactive; that's why people drink it. Perhaps you need to look up what psychoactive means. Link to comment Share on other sites More sharing options...
Halibut Posted April 7, 2012 Share Posted April 7, 2012 Stop embarassing yourself. I'm not saying that tea and coffee are health drinks but its self evident that they're nothing like crack and heroin etc. He isn't saying it's effects are like crack and heroin, he's pointing out that it's psychoactive, which is quite correct. Link to comment Share on other sites More sharing options...
ferno Posted April 7, 2012 Share Posted April 7, 2012 You're not seriously comparing heroin with tea and coffee? are you?? Of course. The mechanisms employed by caffeine, cocaine, and heroin, are to close blood vessels in the brain, so the brain and body cannot sleep, to cause the release of adrenaline into the body, so the body remains active and alert, and to manipulate dopamine production in the brain, so the person experiences a temporary "high." Link to comment Share on other sites More sharing options...
ferno Posted April 7, 2012 Share Posted April 7, 2012 One final mechanism caffeine, cocaine, and heroin share, is their ability to manipulate dopamine production. Dopamine, a neurotransmitter, activates the "pleasure centers" in certain parts of the brain, and simply makes a person feel good. Naturally, the pleasurable effect produced by dopamine manipulation plays a prominent role in caffeine addiction. One of the mechanisms that caffeine addiction, cocaine addiction, and heroin addiction share, is that they block an adenosine's ability to slow the nerve cells' activity in preparation for sleep, and instead increase the speed of their activity and of the neuron firing in the brain. The caffeine causes the blood vessels in the brain to constrict, because it has blocked the adenosine's ability to open them to allow sleep. The ability of caffeine to close the blood vessels is why many pain relievers contain caffeine. If a person has a vascular headache, the caffeine in the medicine will shut down the blood vessels, thus easing the pain. Link to comment Share on other sites More sharing options...
spooky3 Posted April 7, 2012 Share Posted April 7, 2012 Of course. The mechanisms employed by caffeine, cocaine, and heroin, are to close blood vessels in the brain, so the brain and body cannot sleep, to cause the release of adrenaline into the body, so the body remains active and alert, and to manipulate dopamine production in the brain, so the person experiences a temporary "high." But is the high anywhere as high as when on heroin, stop being silly! Link to comment Share on other sites More sharing options...
Halibut Posted April 7, 2012 Share Posted April 7, 2012 But is the high anywhere as high as when on heroin, stop being silly! He's not claiming that it is. Calm down. Link to comment Share on other sites More sharing options...
harvey19 Posted April 7, 2012 Share Posted April 7, 2012 Of course. The mechanisms employed by caffeine, cocaine, and heroin, are to close blood vessels in the brain, so the brain and body cannot sleep, to cause the release of adrenaline into the body, so the body remains active and alert, and to manipulate dopamine production in the brain, so the person experiences a temporary "high." So why don't drug addicts switch to coffee ? Link to comment Share on other sites More sharing options...
The real me Posted April 7, 2012 Share Posted April 7, 2012 So why don't drug addicts switch to coffee ? Can't wait for the responce to that. Link to comment Share on other sites More sharing options...
Halibut Posted April 7, 2012 Share Posted April 7, 2012 So why don't drug addicts switch to coffee ? Because it's psychoactive effects are different to those of heroin. Link to comment Share on other sites More sharing options...
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