Genetics reveal moderate coffee intake is safe during pregnancy
University of Queensland researchers have found enjoying a daily latte or "long black" coffee causes no increased risk to pregnancy.
Jun 13, 2022
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University of Queensland researchers have found enjoying a daily latte or "long black" coffee causes no increased risk to pregnancy.
Jun 13, 2022
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Recent research published by Clarkson University scientists shows that adaptogenic-rich caffeinated beverages are significantly more helpful than synthetically sourced caffeinated beverages for people with low mental energy ...
Jun 03, 2022
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If you need another reason to start the day drinking a cup of joe, a recent study by Johns Hopkins Medicine researchers has revealed that consuming at least one cup of coffee a day may reduce the risk of acute kidney injury ...
Jun 02, 2022
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DEAR MAYO CLINIC: I love to drink coffee. I often have multiple cups a day. Recently, I was diagnosed with diabetes and high blood pressure. My doctor advised that I may want to cut back on my beverage of choice, as it is ...
Mar 23, 2022
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For years, the American Academy of Sleep Medicine, experts on all things sleep, has called for daylight saving time to be abolished.
Mar 12, 2022
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Most patients with sleep problems adopt maladaptive coping strategies—such as taking sleep aids, using caffeine, and taking daytime naps—that may actually contribute to decreased sleep quality, reports a study in The ...
Feb 25, 2022
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Scientists have a new understanding of the protective effects of caffeine on the cardiovascular system. While its stimulant effects have long been characterized, a team of Canadian researchers have discovered how caffeine ...
Feb 16, 2022
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When it comes to getting in shape, many people are willing to try any tricks they need to reach their goals faster. For many years, protein shakes were seen as essential after a workout. But more recently, in addition to ...
Feb 03, 2022
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(HealthDay)—Party people should think twice before relying on a fly-by-night remedy to cure the hangover they suffer from a New Year's Eve bender, warns an ER doc based in the Big Apple.
Dec 31, 2021
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People who like to drink their coffee black also prefer dark chocolate, a new Northwestern Medicine study found. The reason is in their genes.
Dec 16, 2021
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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.
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