Caffeine is a stimulant drug found in many popular beverages, such as coffee and energy drinks. It is also an ingredient in some pills marketed to promote alertness or weight loss. Caffeine physiologically effects the body in a manner similar to...
Caffeine is found in coffee, tea, soft drinks, chocolate, kola nuts and certain medicines. It stimulates the nervous system and is commonly used to maintain energy and alertness. A moderate daily dose of caffeine is 200 to 300 mg, equivalent to...
If you reach for a cup or more of coffee each day, you are not alone. Millions of people enjoy their daily dose of coffee, tea, soda and even chocolate. While caffeine is not harmful in small amounts, larger amounts can cause a host of negative...
Caffeine, a component in coffee, tea and colas, affects the body as a central nervous system stimulant, diuretic and vasoconstrictor. Moderate caffeine consumption affects the body in a variety of beneficial ways. Excessive caffeine intake -- four...
Caffeine stimulates the central nervous system, reaching the bloodstream within 30 to 45 minutes after ingestion. Because caffeine is water soluble, the body quickly absorbs it through the stomach lining. Excessive consumption of caffeine can lead...
Caffeine is a substance obtained from the leaves and seeds of plants; many sodas, coffee and teas contain caffeine, according to the University of Michigan University Health Service website. Caffeine is a stimulant and is one of the most commonly...
Caffeine stimulates the central nervous system. People consume caffeine in the form of coffee, energy drinks, and cola drinks throughout the day to stay mentally alert and prevent fatigue. The American Heart Association states that caffeine does...
Caffeine is a mild stimulant and one of the most popular chemicals in the world, consumed by up to 90 percent of the world's population, according to Brown University. Most people consume caffeine in the form of food products like coffee, tea,...
For many people, no day would be complete without the energy-jolting boost of a caffeinated beverage: Four out of every five Americans consume caffeine daily, according to Swedish Medical Center, making it the most commonly used drug in the world....
Caffeine is a stimulant that can help to provide a burst of energy and create feelings of alertness. It can be found in coffee, tea, sports or energy drinks and it is found in some foods and medications. Athletes may use caffeine to try to enhance...
Caffeine is a central nervous system stimulant that temporarily increases attention, alertness and motor activity, reports the University of Michigan Health Service. Alcohol is a depressant, which serves to slow down brain and motor activity....
Caffeine is a type of drug found naturally in the seeds and leaves of various plants. It is located in a plethora of foods and drinks such as coffee, soda pop, energy drinks, chocolate and tea. In addition, some medications contain caffeine....
Many adults consume caffeine daily. Coffee, tea, chocolate and sodas are the most common sources, but caffeine occurs naturally in more than 60 different plants. In the body, caffeine is absorbed quickly and enters the bloodstream and then the...
Coffee is a drink prepared from coffee beans, which are grown in more than 70 countries. Coffee contains a variety of substances, such as kahweol and cafestol, but the effects of coffee on the body are mainly due to its caffeine content. This...
Caffeine is a popular drug that is associated with increasing energy and alertness. It is found in coffee, tea, caffeinated beverages and chocolate. Excess caffeine can cause symptoms such as insomnia, nausea, flushed face and difficultly...
The dehydrating effects of caffeine and alcohol have commonly been advanced by a myriad of authorities, including Harvard Medical School and Vanderbilt University. But recent studies call in question whether drinks containing caffeine decrease...
Caffeine is probably the best-known ingredient in coffee, tea, energy drinks, soft drinks and cocoa. While many people enjoy the taste of these drinks or use them to satisfy thirst, they may not be thinking about the effect of the caffeine they...
Hydration refers to the amount of fluid retained and used by the body. The Kendrick Fincher Hydration Foundation notes that the body is made up of 75 percent water, which is important for carrying nutrients and oxygen to all the cells. A hydrated...
Caffeine is a bitter-tasting chemical that is typically found in coffees, certain teas, colas and other soft drinks, chocolates, and in many so-called "energy drinks." It has many physiological effects on your body, including stimulation of your...
Many adults start the morning with a dose of caffeine and may consume it regularly throughout the day as a widely used pick-me-up. However, teens are proving to be frequent consumers of caffeine as well, notes Walden University. Therefore, it's...
Medical professionals have commonly warned against the dehydrating effects of alcohol and caffeine in the body. As of 2010, authorities such as Harvard Medical School and Vanderbilt University continue to advance the dehydrating effects of both....
Caffeine is a naturally occurring chemical found in coffee, tea, chocolate, sodas, energy pills and drinks, and even medications. Caffeine behaves as a neuro-stimulant by acting as an appetite suppressant and by increasing cognitive awareness....
The United States faces an obesity crisis, but caffeinated beverages such as coffee and soda are popular. It would seem that caffeine -- which elevates the heart rate and gives people a boost of energy -- would help people lose weight. However,...
Caffeine is the most common psychotropic or mood-altering drug in modern society, well known for its stimulating effects. According to Southern Illinois University, caffeine can be found in foods such as tea, coffee, soda and chocolate and in...
Many people use caffeinated products, like energy drinks, to increase energy throughout the day. Caffeine increases blood flow and increases the amount of oxygen the body takes in, which may increase energy for the short-term when the body is at...
At times it may feel as though you can't function in the morning without coffee. According to the National Coffee Association, more than 50 percent of adults consume coffee every day. Caffeine---the stimulant in coffee as well as tea and other...
If you're a fan of coffee but want to maintain your weight, you might wonder whether drinking coffee could make you hungry. While there isn't a scientifically established causal link between coffee and hunger, coffee affects your body in a number...
Caffeine is a stimulant that triggers several changes in the body. It is consumed by many people as a means of improving alertness and energy. But caffeine can also affect the gastrointestinal system, and not necessarily in ways you would like. It...
Chocolate, soft drinks, sport and energy drinks, tea and coffee all contain caffeine. The substance is also available as an over-the-counter supplement. Weightlifters use caffeine to increase concentration and to enhance lifting performance, but...
