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Caffeine is the world's most widely consumed psychoactive drug. [20] [21] Unlike most other psychoactive substances, caffeine remains largely unregulated and legal in nearly all parts of the world. Caffeine is also an outlier as its use is seen as socially acceptable in most cultures with it even being encouraged.
Caffeine has also evolved independently in the more distantly related genera Theobroma and Camellia . [13] This suggests that caffeine production is an adaptive trait in coffee and plant evolution. The fruit and leaves also contain caffeine, and can be used to make coffee cherry tea and coffee-leaf tea. The fruit is also used in many brands of ...
It has naturally low levels of caffeine, less than half of that found in Coffea arabica, and a quarter of that in Robusta coffee. Coffea racemosa is endemic to the coastal forest belt between northern KwaZulu-Natal in South Africa and Zimbabwe , found in an area less than 150 km 2 (58 sq mi) in size. [ 2 ]
[6] [7] [8] After plain water, tea is the most widely consumed drink in the world. [9] There are many different types of tea; some have a cooling, slightly bitter, and astringent flavour, [10] while others have profiles that include sweet, nutty, floral, or grassy notes. Tea has a stimulating effect in humans, primarily due to its caffeine ...
Whether you start each day with a latte or rely on a shot of espresso to get over the mid-afternoon hump, a healthy, moderate caffeine habit can provide 11 health benefits of caffeine, the most ...
Natural sources of caffeine contain widely varying mixtures of xanthine alkaloids other than caffeine, including the cardiac stimulants theophylline, theobromine and other substances such as polyphenols, which can form insoluble complexes with caffeine. [12] [13] The main natural phenols found in guarana are (+)-catechin and (-)-epicatechin. [14]
Theobromine is a naturally occurring stimulant that dilates blood vessels (instead of constricting them) to increase blood flow, which gives you the same boost of energy that coffee does—except ...
The most recent study on this topic, published in Rheumatology on October 9, found that consuming more caffeine—found in sources such as coffee, tea, and cocoa—may help improve blood vessel ...