News tagged with caffeine
(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 |
(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 |
Recent studies have linked caffeine consumption to a reduced risk of Alzheimer's disease, and a new University of Illinois study may be able to explain how this happens.
Neuroscience Oct 09, 2012 | 4.8 / 5 (6) | 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
A yet unidentified component of coffee interacts with the beverage's caffeine, which could be a surprising reason why daily coffee intake protects against Alzheimer's disease. A new Alzheimer's mouse study by researchers ...
Health Jun 21, 2011 | 4 / 5 (5) | 2 |
A new study to be presented at the Society for Experimental Biology meeting on June 30 has shown that caffeine boosts power in older muscles, suggesting the stimulant could aid elderly people to maintain their strength, reducing ...
Health Jun 28, 2012 | 4.5 / 5 (4) | 0
Caffeine perks up most coffee-lovers, but a new study shows a small dose of caffeine also increases their speed and accuracy for recognizing words with positive connotation. The research published November 7 in the open access ...
Neuroscience Nov 07, 2012 | 5 / 5 (3) | 0 |
Caffeine reduces muscle activity in the Fallopian tubes that carry eggs from a woman's ovaries to her womb. "Our experiments were conducted in mice, but this finding goes a long way towards explaining why drinking caffeinated ...
Medical research Jul 20, 2011 | 5 / 5 (2) | 0 |
There might be a time when instead of just drinking that morning cup of coffee you lather it on your skin as a way of preventing harmful sun damage or skin cancer.
Cancer Aug 15, 2011 | 5 / 5 (2) | 0 |
Stress urinary incontinence (SUI) can occur due to sneezing, coughing, exercising or even laughing and happens because the pelvic floor muscles are too weak causing leakage when the bladder is put under pressure. New research ...
Diseases, Conditions, Syndromes Aug 20, 2012 | 5 / 5 (2) | 1
The family of a 14-year-old Maryland girl is suing the California makers of Monster Energy, alleging Friday that too much caffeine in the popular energy drink led to her death.
Health Oct 20, 2012 | 3.3 / 5 (3) | 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
(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
(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
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
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
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