(HealthDay)—It seems as though every day brings yet another study on the effects of caffeine or coffee in particular. Researchers have looked at its effects on almost every aspect of health, from overall mortality to the ...
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Caffeine can boost energy, improve alertness and produce a general feeling of well-being—when used in moderation.
Jul 11, 2019
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A web-based caffeine optimization tool successfully designs effective strategies to maximize alertness while avoiding excessive caffeine consumption, according to preliminary results from a new study.
Jun 07, 2019
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Nicotine and caffeine withdrawal can cause unnecessary suffering to patients in intensive care units (ICUs), and could be leading to unneeded laboratory testing and diagnostic imaging such as X-rays and MRIs, according to ...
Jun 01, 2019
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(HealthDay)—From cappuccinos to cold brew, coffee is a morning must for many Americans, but is it healthy and how much is too much?
May 31, 2019
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Frequent headaches can interfere with your daily life. But healthy lifestyle choices can help you head off the pain. Start with the basics, including diet, exercise and relaxation.
May 21, 2019
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Regular coffee drinkers can sniff out even tiny amounts of coffee and are faster at recognising the aroma, compared to non-coffee drinkers, new research has found.
May 14, 2019
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Latte, cappuccino or short black, a morning coffee is an essential for many people looking to kick start their day. But while the humble coffee may be a vital feature of the daily grind, how much is too much?
May 10, 2019
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It's not uncommon for teenagers to grab an energy drink for an after-school pick-me-up or pop through the drive-through at Starbucks for a morning Frappuccino.
May 02, 2019
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Researchers from the Department of Pediatrics at Case Western Reserve University School of Medicine and University Hospitals Rainbow Babies and Children's Hospital presented results of a study that investigated whether there ...
Apr 29, 2019
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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.
This text uses material from Wikipedia, licensed under CC BY-SA
