News tagged with caffeine
(AP)—A Food and Drug Administration investigation into the safety of caffeine-added foods has prompted Wrigley to take its new caffeinated gum off the market for the time being.
Health May 09, 2013 | not rated yet | 0
The US food and drug regulator on Friday called the addition of caffeine to children's foods like chewing gum and jelly beans "dangerous" and warned of a possible crackdown.
Health May 03, 2013 | 5 / 5 (1) | 0
Since 1977, there has been a 70% increase in caffeine consumption among children and adolescents. Whether it is coffee, tea, soda, or energy drinks, our children are consuming more of it. One well documented effect of caffeine ...
Health Apr 22, 2013 | 3.5 / 5 (2) | 0
(Medical Xpress)—Researchers from the University of Alberta are abuzz after using fruit flies to find new ways of taking advantage of caffeine's lethal effects on cancer cells—results that could one day ...
Cancer Apr 18, 2013 | 4.6 / 5 (11) | 0 |
We are often asked whether coffee is good or bad for the health. The answer is both good and bad.
Health Apr 13, 2013 | 3.5 / 5 (6) | 0
Consumption of energy drinks containing caffeine may have beneficial effects on exercise but probably not for mental function. The effects of pre-exercise caffeine consumption by trained cyclists on racing ...
Health Mar 11, 2013 | not rated yet | 0
Drinking just two cups of coffee a day is associated with the risk of low birth weight. Researchers at Sahlgrenska Academy, University of Gothenburg, Sweden, have conducted a study on 59,000 women in collaboration with the ...
Obstetrics & gynaecology Mar 11, 2013 | not rated yet | 0
Caffeine-related toxicity, deaths, and near-deaths are an undeniable fact. In Sweden, for example, four people died as a result of confirmed caffeine-related causes in one year. Yet caffeine use continues to grow, including ...
Health Feb 26, 2013 | 3 / 5 (2) | 0
(Medical Xpress)—A large study of nearly half a million older adults followed for about 12 years revealed a clear trend: as coffee drinking increased, the risk of death decreased. Study author Neal Freedman, PhD, MPH, National ...
Health Feb 19, 2013 | 3 / 5 (2) | 0
Maternal nutrition is important to a developing embryo and to the health of the child later in life. Supplementing the diet with specific vitamins is known to increase health of the foetus for example folic acid (vitamin ...
Obstetrics & gynaecology Feb 18, 2013 | not rated yet | 0 |
The growing popularity of energy drinks—and deaths linked to those products—are fostering new concerns about how much caffeine people can safely consume, according to the cover story in the current edition ...
Health Feb 06, 2013 | not rated yet | 0
(HealthDay)—The days when U.S. children can get themselves a sugary soda or a chocolate bar from a school vending machine may be numbered, if newly proposed government rules take effect. ...
Health Feb 04, 2013 | not rated yet | 0
(HealthDay)—A new report warns that popular energy drinks such as Red Bull and Rockstar pose potential hazards to teens, especially when mixed with alcohol.
Pediatrics Feb 01, 2013 | 3 / 5 (2) | 0
(HealthDay)—A new study finds that popular supplement pills and powders found for sale at many military bases, including those that claim to boost energy and control weight, often fail to properly describe ...
Health Jan 08, 2013 | 5 / 5 (1) | 0 |
(Medical Xpress)—That cup of coffee you have each morning could be doing more than giving you a wake-up jolt; it may actually improve your ability to process information. That's according to a study by ...
Psychology & Psychiatry Dec 21, 2012 | 4.3 / 5 (7) | 2 |
Caffeine is a bitter, white crystalline xanthine alkaloid that is a psychoactive stimulant drug. Caffeine was discovered by a German chemist, Friedrich Ferdinand Runge, in 1819. He coined the term "kaffein", a chemical compound in coffee, which in English became caffeine. Caffeine is also part of the chemical mixtures and insoluble complexes guaranine found in guarana, mateine found in mate, and theine found in tea; all of which contain additional alkaloids such as the cardiac stimulants theophylline and theobromine, and often other chemicals such as polyphenols which can form insoluble complexes with caffeine.
Caffeine is found in varying quantities in the beans, leaves, and fruit of some plants, where it acts as a natural pesticide that paralyzes and kills certain insects feeding on the plants. It is most commonly consumed by humans in infusions extracted from the cherries of the coffee plant and the leaves of the tea bush, as well as from various foods and drinks containing products derived from the kola nut. Other sources include yerba mate, guarana berries, and the Yaupon Holly.
In humans, caffeine is a central nervous system (CNS) stimulant, having the effect of temporarily warding off drowsiness and restoring alertness. Beverages containing caffeine, such as coffee, tea, soft drinks, and energy drinks enjoy great popularity. Caffeine is the world's most widely consumed psychoactive substance, but unlike many other psychoactive substances it is legal and unregulated in nearly all jurisdictions. In North America, 90% of adults consume caffeine daily. The U.S. Food and Drug Administration lists caffeine as a "Multiple Purpose Generally Recognized as Safe Food Substance".
Caffeine has diuretic properties, at least when administered in sufficient doses to subjects who do not have a tolerance for it. Regular users, however, develop a strong tolerance to this effect, and studies have generally failed to support the common notion that ordinary consumption of caffeinated beverages contributes significantly to dehydration.
For more information about Caffeine, read the full article at
This text uses material from Wikipedia and is available under the GNU Free Documentation License.