Does caffeine cause cists?
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It has been know to yes, any excessive amount of drugs can. It is highly unlikely, but my girlfriend got afew from caffeine. They were dormate, and did not do any damage, and actually wound up going away as she weened herself off of caffeine.
1056003
Caffeine is a natural diuretic so yes it does dehydrate you. If you're addicted to it (like myself...DOH!!) be sure to drink plenty of water to replace the water lost.
548824
Funny you should ask.  I am trying to drink more, well I'm trying to drink only water.  I brought a gallon of drinking water to work with me today, half is gone.  I noticed when I stopped drinking anything with caffeine, my joints didn't ache anymore.
922377
amphetamines are very dangerous..they are multiple strong doses of caffine like about 50 cups of coffee at once..it raises your heart rate tremendously and can cause heart attack if there is a underlying problem even if you are youn...find a doctor and consult with them
457656
A fatal dose of caffeine has been calculated to be more than 10 grams (about 170 mg/kg body weight) - this is the same as drinking 80 to 100 cups of coffee in rapid succession - not an easy thing to do.\n\n\nhttp://staff.washington.edu/chudler/caff.html
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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
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Another reason could be you have simply had too much caffeine and/or not enough sleep.  If I drink too much coffee and eat chocolate, my eye twitches.
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Studies have shown that you get used to the caffeine and it no longer dehydrates you....\n"Regular coffee and tea drinkers become accustomed to caffeine and lose little, if any, fluid. In a study published in the October issue of the Journal of the American College of Nutrition, researchers at the Center for Human Nutrition in Omaha measured how different combinations of water, coffee and caffeinated sodas affected the hydration status of 18 healthy adults who drink caffeinated beverages routinely. \n\n"We found no significant differences at all," says nutritionist Ann Grandjean, the study's lead author. "The purpose of the study was to find out if caffeine is dehydrating in healthy people who are drinking normal amounts of it. It is not." \n\nThe same goes for tea, juice, milk and caffeinated sodas: One glass provides about the same amount of hydrating fluid as a glass of water. The only common drinks that produce a net loss of fluids are those containing alcohol — and usually it takes more than one of those to cause noticeable dehydration, doctors say. "
1016000
As adenosine is created in the brain, it binds to adenosine receptors. The binding of adenosine causes drowsiness by slowing down nerve cell activity. In the brain, adenosine binding also causes blood vessels to dilate (presumably to let more oxygen in during sleep).\n\nTo a nerve cell, caffeine looks like adenosine. Caffeine therefore binds to the adenosine receptor. However, it doesn't slow down the cell's activity like adenosine would. So the cell cannot "see" adenosine anymore because caffeine is taking up all the receptors adenosine binds to. So instead of slowing down because of the adenosine level, the cells speed up. You can see that caffeine also causes the brain's blood vessels to constrict, because it blocks adenosine's ability to open them up. This effect is why some headache medicines like Anacin contain caffeine -- if you have a vascular headache, the caffeine will close down the blood vessels and relieve it.\n\nSo now you have increased neuron firing in the brain. The pituitary gland sees all of the activity and thinks some sort of emergency must be occurring, so it releases hormones that tell the adrenal glands to produce adrenaline (epinephrine).
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yes, both\n\nNicotine affects the entire body. Nicotine acts directly on the heart to change heart rate and blood pressure. It also acts on the nerves that control respiration to change breathing patterns. In high concentrations, nicotine is deadly, in fact one drop of purified nicotine on the tongue will kill a person. It's so lethal that it has been used as a pesticide for centuries.\n\naffeine\n\nAHA Recommendation\n\nCaffeine has many metabolic effects. For example,\n\n    * It stimulates the central nervous system.\n    * It releases free fatty acids from adipose (fatty) tissue.\n    * It affects the kidneys, increasing urination, which can lead to dehydration.\n\nCaffeine is in coffee, tea, soft drinks, chocolate and some nuts. Whether high caffeine intake increases the risk of coronary heart disease is still under study.\n\nMany studies have been done to see if there's a direct link between caffeine, coffee drinking and coronary heart disease. The results are conflicting. This may be due to the way the studies were done and confounding dietary factors. However, moderate coffee drinking (1-2 cups per day) doesn't seem to be harmful.\n\nCaffeine-habituated individuals can experience "caffeine withdrawal" 12 to 24 hours after the last dose of caffeine. It resolves within 24-48 hours. The most prominent symptom is headache. They can also feel anxiety, fatigue, drowsiness and depression.\nRelated AHA publications:\n\n    * An Eating Plan for Healthy Americans... American Heart Association Diet\n    * Easy Food Tips for Heart-Healthy Eating (also in Spanish)
32068
sometimes this can be from to much caffine. if it is not a chest muscle spasming see a doctor to rule out anything serious.
479242
Can I ask? Do you find that this feeling happens during warmer days? The heat could be a key. If so, it might be the caffiene. As a fellow Mountain Dew lover, I find that after coffe, tea and dew all the caffiene totally messes with my system and dizziness and almost a "numbing" effect in my stomach and body seems to take over. My doctor told me to limit my caffiene intake to one cup. I now drink decaffinated tea in the summer and much more water. I cut the dew in the spring and summer too and switch to gatorade or something. *shrugs* Just a thought. Good luck.....hope you get better!
311154
i would think so because caffine makes your insides react faster because it is caffine and that will make your stomach work harder
265664
Judi, do you consume large amounts of caffeine?  That gets me going sometimes;  also stress, lack of enough quality rest.
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Probably a cist, see your doctor NOW!
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Signs and Symptoms of Caffeine Intoxication or Abuse\n \nnervousness, headache, increased heart rate, anxiety,            upset stomach, irregular heartbeat,  irritability, GI irritation, elevated blood pressure,  agitation, heartburn, increased cholesterol, tremors, diarrhea, nutritional deficiencies, insomnia, fatigue, poor concentration, depression, dizziness, bed wetting.\n \nCaffeine Withdrawal Symptoms\n \nheadache, constipation, runny nose, craving,                            anxiety, nausea, irritability, nervousness, vomiting, insomnia, shakiness, cramps, fatigue, dizziness, ringing in the ears, depression, drowsiness, feeling hot and cold, apathy,           inability to concentrate\n\n                                                      ****\n\nMany disorders of the human immune system fall into two broad categories that are characterized by:\n\nWeakened immune response: \n\nThere are 'congenital' (inborn) and 'acquired' forms of immunodeficiency, characterized by an attenuated response. Chronic granulomatous disease, in which phagocytes have trouble destroying pathogens, is an example of the former, while AIDS ("Acquired Immune Deficiency Syndrome"), an infectious disease caused by the HIV virus that destroys CD4+ T cells, is an example of the latter. Immunosuppressive medication intentionally induces an immunodeficiency in order to prevent rejection of transplanted organs. \n\nOverzealous immune response: \n\nOn the other end of the scale, an overactive immune system figures in a number of other disorders, particularly autoimmune disorders such as lupus erythematosus, type I diabetes (sometimes called "juvenile onset diabetes"), multiple sclerosis, psoriasis, and rheumatoid arthritis. In these, the immune system fails to properly distinguish between self and non-self, and attacks a part of the patient's own body. Other examples of overzealous immune responses in disease include hypersensitivities, such as allergies and asthma. \n\nOther factors that affect immune response:\n \nMany factors can also contribute to the general weakening of the immune system:\n\nMalnutrition (unbalanced diet / poor eating habits that cause a lack of vitamins, minerals and Polyphenol antioxidants) \nAlcohol abuse \nDrug abuse either intravenous or other. (Appears related to associated factors i.e. poor diet, use of infected/dirty needles, poor exercise, stress/depression) \nMedications (particularly the use of anti-cancer drugs, corticosteroids, and antibiotics); \nRadiation \n\nExposure to certain environmental toxins, whether naturally occurring or from pollution. These include: \nCigarette smoke \nStress/Depression - Research shows that psychological stress can greatly increase your susceptibility to colds and other viral diseases, namely through an increase in serum corticosteroid levels \nAge - Ability of the immune system to respond is decreased at early and old age. \nDecrease ability to heal due to disease or medications (i.e. Diabetes, corticosteroids, immune suppressant drugs), causing constant exposure to infectious agents without natural defense (intact skin) \nInadequate sleep at the Delta brain wave level. According to a sleep study, we need 4 hours of Delta sleep every night \nLack of exercise as well as excessive exercise resulting in physiological stress \nLong-term weightlessness \n\nDiseases either infectious or other causing more depression on the immune system like: \nCancer, and hematological malignancy (such as leukemia, lymphoma and myeloma) in particular. \nDiabetes Mellitus \nCystic fibrosis \nLupus Erythematosus \nNephrotic syndrome \nViral infections i.e. viral respiratory infections then allowing for bacterial pneumonia to develop. \nHIV \nUlcerative colitis \nBulimia (due to malnutrition, stress, depression). \nSickle-cell disease. \nLiver disease / cirrhosis \nCushing's syndrome \nProtects \nHuntington's Chorea
669612
well caffeine dehydrates you (its a diuretic), and dehydration headaches are very common. if youre drinking the sodas, chances are its instead of water. the water would hydrate you, but the soda actually has a reverse effect because of the caffiene and carbonation. thats probably why you get the headaches from it.