what is caffeines effect on plant growth?
455755
In the short run caffeine will accelerate a plant's growth.  But in the long run, if nothing is fed to the plant except caffeine, it will die from lack of nutrition.
294572
Water is crucial to photosynthasis, but you may be surprised at the results of other liquids (that are water based of course, everything else will kill the plant---fast!) Just play around with it, that is the fun of experiments. Try some liquids that are more acidic and some that are more basic. Sprite, asprin dissolved in water.... Maybe try coffee--I know that coffee grounds work as a great compost and make plants grow faster and fuller. Who know? Good luck & have fun!
609918
CHICAGO A recent study shows that caffeine exerts a positive effect on short-term memory and reaction times. \n\nFor the first time, researchers have demonstrated that caffeine modulates short-term working memory. The study was presented today at the annual meeting of the Radiological Society of North America (RSNA). \n\n\n"We were able to show that caffeine modulates a higher brain function through its effects on distinct areas of the brain," said the paper's lead author, Florian Koppelstatter, M.D., Ph.D., radiology fellow at Medical University Innsbruck in Austria. \n\n\nDr. Koppelstatter and colleagues used functional magnetic resonance imaging (fMRI) to determine the effects of caffeine consumption on brain activation in a network of modules subserving short-term memory of 15 healthy adult volunteers during a working memory task. Working memory represents the kind of brain activity required to remember things for a short period of time, according to Dr. Koppelstatter, "like looking up a telephone number in the phone book and storing the number until you've dialed it." \n\n\nThe volunteers were shown a sequence of simple images (the letters A, B, C or D) and then asked if an image was the same as the one shown two images earlier. The volunteers were instructed to respond as quickly as possible using the right index finger for "yes" and the left index finger for "no." The task was performed after a 12-hour period of no caffeine and a four-hour period of no nicotine exposure. Administration of 100 milligrams (mg) of caffeine (approximately the amount in two cups of coffee) as well as placebo was randomized across volunteers so that each of them underwent a caffeine and placebo scan. \n\n\nIn the "caffeine condition," the volunteers demonstrated a tendency towards improved short-term memory skills and reaction times during the task. The fMRI showed increased activity in brain regions located in the frontal lobe, where a part of the working memory network is located, and the anterior cingulum, the part of the brain that controls attention. In the "placebo condition," the volunteers showed no change in activation patterns from the earlier test. \n\n\n"What is exciting is that by means of fMRI we are able to see that caffeine exerts increases in neuronal activity in distinct parts of the brain going along with changes in behavior," Dr. Koppelstatter said. \n\n\nWhile these results are promising, Dr. Koppelstatter does not recommend rushing out to the break room for another cup of coffee just yet. "We can demonstrate that caffeine exerts influence on the function of the normal brain, but we still need to learn more about caffeine's effect on mental resources." \n\n\nCaffeine is currently the most widely used stimulant in the world, and is mainly found in coffee, tea, soft drinks and chocolate. Daily caffeine consumption per person averages 76 mg (equivalent to 1 1/2 cups of coffee) worldwide and 238 mg (more than 4 1/2 cups of coffee) in the United States. \n\n\nDr. Koppelstatter's co-authors are Thorsten D. Poeppel, M.D., PhD., Christian M. Siedentopf, Ilka Haala, Anja Ischebeck, Ph.D., Felix M. Mottaghy, M.D., Ph.D., Paul Rhomberg, M.D., Ph.D., Michael Verius, Ph.D., Stefan M. Golaszewski, M.D., Ph.D., Christian Kolbitsch, M.D., Ph.D., Stephan R. Felber, M.D., Ph.D., and Bernd J. Krause, M.D., Ph.D. \n\n\nRSNA is an association of more than 38,000 radiologists, radiation oncologists, medical physicists and related scientists committed to promoting excellence in radiology through education and by fostering research, with the ultimate goal of improving patient care. The Society is based in Oak Brook, Ill. \n\n\nAT A GLANCE \n\n- Caffeine exerts a positive effect on short-term memory and reaction times. \n\n- fMRI showed that 100 milligrams of caffeine (about two cups of coffee) increased activity in regions of the brain associated with
377810
Coffee can often have a paradoxical effect, in which it can actually induce sleep-this occurs generally at very high doses, or in people that are especially sensitive to it.  But, as is the case with all chemicals, there is a wide range of physiological responses in humans, and you may just be immune to the stimulatory effects of caffeine-it probably has to do with the levels of detoxifying enzymes in your liver-thus, you may be insensitive to many drugs.  This is something to be aware of if you are ever ill and need medication.
20724
There is no concrete answer as genetics and lifestyle habits will determine the effect of long time caffeine utilization.  I believe i is great but then again I have no job and I am also addicted to Yahoo Answers...I bet Yahoo will come out w/ an article about how great Yahoo Answers are but realistically they are killing productivity worldwide while preparing a propaganda campaign of subconscious self promotion and advertising
548047
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.
277755
Caffine is a stimulant. Too much can make your heart start to beat too fast, smong other things.
494339
"There has been no conclusive study showing that coffee stunts your growth. However excessive coffee consumption can have a negative impact on your health."
124722
"An overdose of caffeine can result in a state termed caffeine intoxication or caffeine poisoning. Its symptoms are both physiological and psychological. Symptoms of caffeine intoxication include: restlessness, nervousness, excitement, insomnia, flushed face, diuresis, muscle twitching, rambling flow of thought and speech, paranoia, cardiac arrhythmia or tachycardia, and psychomotor agitation, gastrointestinal complaints, increased blood pressure, rapid pulse, vasoconstriction (tightening or constricting of superficial blood vessels) sometimes resulting in cold hands or fingers, increased amounts of fatty acids in the blood, and an increased production of gastric acid. In extreme cases mania, depression, lapses in judgment, disorientation, loss of social inhibition, delusions, hallucinations and psychosis may occur. [3]"
840460
Two words: GREEN TEA! It's proven to increase metabolism and decrease appetite. Plus, it usually contains caffeine (which has similar effects as the tea and gives you energy). Green tea also helps your immune system and reduces aging.
528567
it primarily comes from coffee beans and tea. Caffeine occurs naturally in many plants, including coffee beans, tea leaves and cocoa nuts., it is a drug and it is extracted\nGabby please give me an email at chevy_ridin_hot_boi@yahoo.com
883000
Yes humidity does affect the growth of plants but the effect is greater in conditions of low humidity (dry).  When it is dry many plants will minimise opening of their stomata to reduce water loss this also has the effect of slowing gas exchange.  Plants need to take in CO2 for photosynthesis, if the stomata are closed this decreses the rate of photosynthesis and therefore the plant has less sugars created.  When the plant has less sugars (food) it can't grow as much.  \nSwamps can have the effect of flooding the root systems of plants so they don't work properly.  There are specially adapted plants that can survive in swamps, most can't.\nHope this helps
573028
Heart palpitation, anxiety attacks, ...quite a  few  side effects.If you think you  had too much of it , call 911 or go to a hospital and tell them you think you might have overdosed on caffeine:). Don't be scared you'll be fine:)\n\nPlease feel free to write me if you need help at lifecoach@voxconsulo.com\nwww.voxconsulo.com
1079060
http://en.wikipedia.org/wiki/Caffeine#Effects_of_caffeine
598122
If I have strong coffee I have problems with my breath but weak coffee several times a day seems to be okay. The same with mountain dew which has a lot caffeine. I think the effect of caffeine had different effects over different people
16322
Check these webpages http://en.wikipedia.org/wiki/Caffeine\nhttp://coffeefaq.com/caffaq.html\nI hope this will help you to find the answer in full.\nBest regards.
339157
The caffeine in coffee acts as a diuretic and increases the rate of excretion of Sodium (Na+).  In short, it causes your kidneys to pump out more "stuff" into your bladder, thus increasing the amount of odor causing substances in your urine.