Caffeine is one of the most consumed drinks in the world. Some people drink caffeine because they like the taste; it can improve their stamina, wake them up, or suppress their appetite. However, there are many negative side effects, including headaches, insomnia, nervousness, heartburn, and anxiety. Caffeine is addictive and drug-like. The longer people drink caffeine, the more they need to drink to get the same effect and stay awake. In Healing ADD, Daniel G. Amen, MD, says, “In the short term, caffeine makes you feel more focused” (211). But consuming 250 mg of caffeine a day, which is more than a Rockstar energy drink or a Starbucks venti, can cause some scary side effects. Taber's Cyclopedic Medical Dictionary states that side effects of caffeine intoxication include "restlessness, nervousness, excitement, insomnia, flushing of the face" as well as irregular heartbeat, muscle twitching , stomach irritation and even death (302). One teen in particular died of cardiac arrest after drinking two 24-ounce Monster energy drinks over a 24-hour period. According to Dr. Hal Harden, when people sensitive to caffeine drink a small amount, they might suffer from not sleeping. deeply for a few nights in a row. If people don't sleep well, they can be extremely tired. Then, in turn, they tend to drink more caffeine to wake themselves up. Caffeine also gives people jitters, anxiety, nervousness and severe headaches. If people drink caffeine and need to sit still, they usually can't help but move with their clothes or get up and down. Not only are people nervous, but they can also be nervous and anxious. Anxiety is a feeling of worry. People may feel more anxiety than usual...... middle of paper ...... it's easy to quit drinking caffeine, so follow some of these guidelines and keep going. Works Cited Amen, Daniel G. Healing ADD. New York: GP Putnam's Sons, 2001. Print. “Caffeine poisoning”. Taber's Cyclopedic Medical Dictionary. 2001 ed. Print. “Withdrawal from caffeine”. Taber's Cyclopedic Medical Dictionary. 2001 ed. Print.Harden, Hal. MD Personal interview. November 17, 2013. James, Jack E. “Acute and Chronic Effects of Caffeine on Performance, Mood, Headache, and Sleep.” » Neuropsychobiology 38.1 (1998): 32-41. ProQuest. Internet. November 19, 2013. Reddy, Sumathi. "A diagnosis of coffee withdrawal; quitting caffeine is now listed as a mental health disorder; the best ways to break the habit." Wall Street Journal (2013). ProQuest. Internet. November 18, 2013. Schupska, Stephanie. “Not enough sleep: 7 serious health risks.” WebMD, LLC. October 5, 2010. The web. November 20. 2013.