Studies on the side-effects of caffeine.

OAKLAND, California (UPI) -- Coffee may be good for life. A major study has found fewer suicides among coffee drinkers than those who abstained from the hot black brew.

The study of nearly 130,000 Northern California residents and the records of 4,500 who have died looked at the effects of coffee and tea on mortality.

Cardiologist Arthur Klatsky said of the surprising results, ``This is not a fluke finding because our study was very large, involved a multiracial population, men, women, and examined closely numerous factors related to mortality such as alcohol consumption and smoking.''

The unique survey also found no link between coffee consumption and death risk. And it confirmed a ``weak'' connection of coffee or tea to heart attack risk -- but not to other cardiovascular conditions such as stroke.

The study was conducted by the health maintenance organization Kaiser Permanente and was reported Wednesday in the Annals of Epidemiology.


Doesn't sound like a good idea

That may be a "bit" too much, i sure would not do it. It's like people taking 3-5 energy drinks a day, some may be ok with that, but it sure is not for everyone :) I know a girl that takes 6-7 coffees a day, but she would not make it past 15 fore sure.

dont do it

that can kill you if you have that much caffeine!!!!! dont do it

Wrong cup

I went to Pete's Coffee and had a 16 oz cup of regular coffee by mistake. I requested decaf, but she must have made a mistake. I had not had regular coffee in 2 years and WOW. I felt a surge of energy like never before and for two hours I was very assertive, aggressive and fast at work. Then two hours later I developed extremely sweaty palms and they are still sweaty 12 hours later as I write this comment. While at work I felt like every call I received was going to be some terrible news and every time I saw a patient, he was going to unhappy with my care. Needless to say, coffee is poison for my brain. I am very sensitive to it now more than ever. Too bad b/c I liked the effects of the first two hours. Thank God the effects are temporary b/c I hate the sense of impending doom. I will be back to my happy self tomorrow. If you are sensitive to caffeine, DON'T BE STUPID Avoid it and be happy. Life is too short for self inflicted suffering.

If a person were injected with 500 milligrams of caffeine...

I read from this page:
that "If a person were injected with 500 milligrams of caffeine , within about an hour he or she would exhibit symptoms of severe mental illness, among them hallucinations, paranoia, panic, mania, and depression.".
But, no source is stated and I couldn't find any independent sources who confirm this finding.
This is possible to happen? I mean, (large dose of) caffeine can make someone crazy? If this is true, can you point some studies who proves that?

I have had some weird and

I have had some weird and scary side effects to caffeine lately. It is so weird I cant even explain it. After drinking coffee or tea I have felt confused, paranoid, lost, and I feel I hallucinated and had loss of memory. It has happened to me about three times and its lasted about 30 minutes. Caffeine would be the only explanation I have and its so scary I don't even like thinking about it, If I tell someone they might think I'm going crazy. I have drank coffee and tea forever and I don't understand why its happening now. Is this normal?

Panic attack?as opposed to a caffiene attack

I don't know a thing about you other than your coffee experience, but the feeling of being confused, paranoid, lost could be a panic attack. If you were under much stress and find yourself breathing heavily, it may well be a little panic attack that your experiencing. I have had an experience like the one I just described and concluded that after a warm hot drink, your body relaxes but your mind is somewhat more active, and coupled with stress (a severe amount! irreconcilable family issues for instance), I panicked. Some time goes by and I have another similar stressful dilemma on my mind and my body starts reacting in a panicky way, but the reactions ceased quickly once I started slowing my breathing and clam myself down. That was when I was sure of having panic attacks.


If a person were injected with air, whitin 1 hour he or she would BE DEAD! do you think you "inject" 500 milligrams off caffein? You drink it! Thats not same as injection. Injection makes it go out in your blood....directly...
Dont be stupid.

Caffeine Overdose

I have no doubt that at some levels, caffeine can cause mental problems and heart attacks, but I have to wonder about you guys experiencing panic and hallucinations at low levels and levels you're normally fine with. Isn't it possible that something other than caffeine is triggering this? Or if these symptoms stop when the caffeine intake ceases, couldn't it be that caffeine just lowers the threshold of an already present predisposition to these problems? Of course you shouldn't be drinking coffee or energy drinks if it makes you feel unwell, but I'm not sure if caffeine can be simply slapped on as the sole mechanism by which these events are happening, case closed. You have to look at other possibilities, and if there's also an underlying predisposition for nervousness or hallucinating, you should probably see a doctor. It might be triggered by something other than caffeine next time - stress, loss, change, who knows.

I myself am a heavy coffee drinker, and I'm mostly on this site because I know too much of anything can be bad, so I wanted the facts.

I agree that it's strange for

I agree that it's strange for regular coffee drinkers to suddenly experience adverse reaction from coffee, but for the infrequent drinker it's quite possible. I unknowingly had a very strong cup of coffee last week after having had none for several weeks, and it sent me into a panic attack which lasted for several hours. It's definitely possible, our bodies are very sensitive.

If this is true, it's

If this is true, it's probably because only a small percentage of the caffeine we ingest makes it into our bloodstream, as well as the fact that it takes time for it to absorb rather than getting into our blood all at once. Injecting 500 mg directly into the blood is, I guess, like drinking 50 cups of coffee in one second.

On an interesting side note, lung tissue is very poor at absorbing nicotine compared to the stomach and intestines. Smoking two cigarettes won't kill you, but eating two cigarettes would result in a fatal nicotine overdose. However, certain other substances are absorbed much better through the lungs than the stomach and intestines.

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