Does coffee or caffeine make one agitated？?
599901
Many notable effects of coffee are related to its caffeine content.\n\nMany coffee drinkers are familiar with "coffee jitters", a nervous condition that occurs when one has had too much caffeine. Like tea, coffee also causes staining of the teeth. The best way to avoid this is to brush after every coffee drinking. Coffee can also increase blood pressure among those with high blood pressure. Coffee can also cause insomnia in some, while paradoxically it helps a few sleep more soundly. It can also cause anxiety and irritability, in some with excessive coffee consumption, and some as a withdrawal symptom. There are also gender-specific effects: in some PMS sufferers it increases the symptoms; it can reduce fertility in women; it may increase the risk of osteoporosis in postmenopausal women; and there may be risks to a fetus if a pregnant woman drinks 8 or more cups a day (48 U.S. fl oz or 1.4 L or more).\n\nA February 2003 Danish study of 18,478 women linked heavy coffee consumption during pregnancy to significantly increased risk of stillbirths (but no significantly increased risk of infant death in the first year). "The results seem to indicate a threshold effect around four to seven cups per day," the study reported. Those who drank eight or more cups a day (48 U.S. fl oz or 1.4 L) were at 220% increased risk compared with nondrinkers. This study has not yet been repeated, but has caused some doctors to caution against excessive coffee consumption during pregnancy.\n\nDecaffeinated coffee is occasionally regarded as a potential health risk to pregnant women, due to the high incidence of chemical solvents used to extract the caffeine. These concerns have almost no basis, however, as the solvents in question evaporate at 80–90 °C, and coffee beans are decaffeinated before roasting, which occurs at approximately 200 °C. As such, these chemicals, namely trichloroethane and methylene chloride, are present in trace amounts at most, and neither pose a significant threat to unborn children. Women still worried about chemical solvents in decaffeinated coffee should opt for beans which use the Swiss water process, where no chemicals other than water are used, although higher amounts of caffeine remain.\n\nThe American Journal of Clinical Nutrition published a study in 2004 which tried to discover why the beneficial and detrimental effects of coffee conflict. The study concluded that consumption of coffee is associated with significant elevations in biochemical markers of inflammation. This is a detrimental effect of coffee on the cardiovascular system, which may explain why coffee has so far only been shown to help the heart at levels of four cups (20 fl oz or 600 mL) or fewer per day.\n\nThe health risks of decaffeinated coffee have been studied, with varying results. One variable is the type of decaffeination process used; while some involve the use of organic solvents which may leave residual traces, others rely on steam.\n\nA study has shown that cafestol, a substance which is present in boiled coffee drinks, dramatically increases cholesterol levels, especially in women. Filtered coffee contains only trace amounts of cafestol.\n\nA study published in the Journal of the American Medical Association announced the discovery of a gene that regulates the detoxification of caffeine in the liver. Two variations of this gene exist with one variation resulting in slower metabolism of caffeine. The study compared 2,014 people who had survived a heart attack with 2,014 healthy people in the general population. For people with the slow metabolizing variation of the gene, the risk of heart attack for 2-3 cups of coffee a day was increased 36% and for 4 or more cups of coffee a day, the risk went up to 64%. For people under the age of 59, the risk went up 24% for just 1 cup of coffee a day, 67% for 2-3 cups a day, and 133% for 4 or more cups a day. Under the age of 50, the risk for heart attack increased 4 fold. 54% of th
1036152
Coffee really doesn't contribute to hypertension or the development of heart disease according to the most recent studies, but it certainly will cause palpitations if consumed in excess.\n\nThat said, tea is probably still healthier because of the antioxidants that it contains.
1181047
Caffeine, and LOTS of it.
224125
Don't let it get to you honey!  Remember, it's nothing but a bunch of 1's and 0's!! ;)\n\nAlso, in cases when I've run out of coffee and needed that all important jolt of caffeine:  munch on chocolate-covered espresso beans then follow with a tracer of Jolt soda.  \n\nActually while you're the market, can you pick up some tofu for me? I ran out. :)))))\n\nKeep smiling! :)
370305
Coffee as you know contains caffeine. Depending on the variety used the caffeine content can vary.  This has the ability to stimulate the brain.  However, overdosing on caffeine can have the reverse affect.  Think Incredible Hulk Syndrome.  Further, caffeine and other substances within the coffee can speed up your heart, too fast.\n\nThe real danger comes from consuming, unwittingly, more caffeine from other sources, such Coca Cola chocolate etc.\n\nHowever, moderation is the watch word.\n\nMy favourite stimulant is TEA [Camellia sinensis]. I consume gallons of it everyday. \n\nOf course it does contain equal amounts of caffeine, as coffee.  Tea does have other inherent health properties.
161093
Yeah, what that guy said.\n\nIn college, I almost killed myself with caffiene to stay awake and study (Just like Jessie on Saved by the Bell)\n\nIt's not worth it's dangerous effects, babe.\n\nExercise raises metabolism more than caffeine.
854249
I don't know, but I am a regular coffee drinker and a cup of hot tea will turn me into a hyper active person.  It is too much for me.
258390
Coffee is a stimulant and irritant first of all. when you drink coffee and you haven't eaten anything before, your body perceives as food and the digestion starts leading to you wanting to go the 'toilette'. apart from that, if you add milk or cream and you intolerance this is what is causing it. if not, it's the first thing that i mentioned. you can switch to homeopathic coffee named CARO by NESTLE (available in most health stores or pharmacies). personally, i like it and it doesn't contain caffeine.
441823
coffee's good points are, it increases awareness, and helps put you on focus. but too much is hard on yer heart and nervous system. symptoms of overdrinking coffe are:bugged eyes\nshaking hands\ninability to stop twitching\nthe strong belief that everyone is out to get you..\nand bleeding from the ears.java ON, man!!
608590
Generally, caffeine will stimulate the Sympathetic Nervous System, thus raising the heart rate
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(m)\n\nCaffeine is found in Coke, Jolt Cola, coffee and chocolate.\nYoung people and teenagers can consume high intakes of caffeine through cola drinks and ice coffee. High doses can cause heart arrhythmia.\nThis usually happens at intakes of more than 600mg of caffeine. This could be equivalent to 10 cups or more of coffee. Caffeine appears to be addictive. \nCaffeine is a stimulant that is often consumed to enhance alertness and concentration. Concentration of caffeine peaks in the blood within 30 to 60 minutes after the first sip and the effects last about four to six hours. Moderate consumption of caffeine is considered to be about 200-300 mg. (about the equivalent of 2-3 cups). Drinking too much caffeine (especially for people who don’t normally consume much) can cause nervousness, anxiety, sleep problems and a temporary increase in heart rate. Excess consumption may increase the risk of headache and elevated blood pressure. \n\nThe amount of caffeine in drinks varies greatly. An 8-ounce cup of brewed coffee contains 65 to 120 mg. of caffeine. However, some coffees may contain as much as 250 mg. of caffeine. A one-ounce serving of espresso contains about 30 to 50 mg. of caffeine. By comparison, a cup of decaf coffee (which is really not caffeine-free) contains 2 to 40 mg. of caffeine. An eight-ounce cup of brewed tea contains 20 to 90 mg. of caffeine. Iced tea tends to have less caffeine, ranging from 24 to 31 mg. of caffeine for an 8-ounce glass. Hot chocolate (8 ounces) contains 3 to 32 mg. of caffeine and a glass of chocolate milk contains 2 to 7 mg. A one-ounce serving of milk chocolate contains about 1 to 15 mg. of caffeine, while dark, semi-sweet chocolate has 5 to 35 mg.
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Caffine is a stimulant and actually makes you more nervous.  Try chomomile tea if you want to relax.
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http://en.wikipedia.org/wiki/Caffeine\n\nTry this site.
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i don't think it's the caffeine, i think it's the damn "energy" drinks that contain all the taurine and whatever else they have in them.\nlong story short - ex husband got pulled over just around the corner from our house, cops called me to let me come get the car and the dog... he was going to jail.\n\nwhen i got there they wanted to know what kinda drugs we were doing.  well, to tell u and them the truth just a shi*t load of weed, at the time, they said his eyes looked like a guy who was smoking crack.  and he acted like one too!! total dick most of the time, but that's what 6 "energy" drinks will do to you a day.
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It really depends on your body, as others have said... different people metabolize caffeine differently.  You'll just have to experiment and see what works (or doesn't) work for you.\n\nA couple of things to think about, though -- drinking coffee on an empty stomach will cause it to be absorbed more quickly, and the effects to seem stronger, than if you have some food in your system when you drink it.  Also, you'll want to consider that coffee will cause you to need to urinate much more than normal (it causes your body to flush out all excess water in your bloodstream, and it also physically irritates the lining of the bladder) -- and so, unless your bladder is *really* strong, drinking coffee too late in the evening may result in needing to get up to visit the bathroom one or more times during the night, which can also affect the quality of your sleep.  Even if you don't wake up to urinate, trying to sleep through the night with a really full bladder can make some people toss and turn a lot, and "hover" near wakefulness so you never quite get to the most restful deep sleep cycles... just something to think about.
12355
Too much caffeine will make you jittery, too much carbonation will give you lots a bodily noises, but the worst part is all the sugar it contains. If soda isn't used in moderation, the pounds will add on. Not to mention, it's horrible for your teeth.
607204
Stop drinking coffee and any other caffinated bevrages immediately. A strange fact that might sound surprising but true, an apple gives you more energy in the morning than caffeine. Surprising but true.