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Caffeine dependence is a condition characterized by a set of criteria, including tolerance, withdrawal symptoms, persistent desire or unsuccessful efforts to control use, and continued use despite knowledge of adverse consequences attributed to caffeine. [1] It can appear in physical dependence or psychological dependence, or both.
A cup of black tea typically has 40 to 50 milligrams of caffeine but can have as much as 90 milligrams. Green teas and white teas will have less caffeine.
The caffeine content of cola drinks and most energy drinks can be difficult to determine, because in many cases the labels do not indicate the dose per serving. Caffeine doses in these beverages range from 20 to 30 mg in some soft drinks, up to 350 mg or more in some energy drinks.
Caffeine-induced anxiety disorder is a subclass of substance- or medication-induced anxiety disorder. [35] Populations that may be most impacted by caffeine consumption are adolescents and people with anxiety disorders. [36] Preliminary research indicated the possibility of a beneficial relationship between coffee intake and reduced depression.
Caffeine-induced psychosis is a relatively rare phenomenon that can occur in otherwise healthy people. Overuse of caffeine may also worsen psychosis in people suffering from schizophrenia . [ 1 ] It is characterized by psychotic symptoms such as delusions, paranoia, and hallucinations.
In caffeine-induced anxiety disorder, such symptoms would be due to the consumption of caffeine. The DSM-5 makes the distinction that the substance must be physiologically capable of leading to the anxiety and panic symptoms. This establishes the relationship between the abused chemical agent and the observed clinical effects.
Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class and is the most commonly consumed psychoactive substance globally. [9] [10] It is mainly used for its eugeroic (wakefulness promoting), ergogenic (physical performance-enhancing), or nootropic (cognitive-enhancing) properties.
However, caffeine and tea are permitted, even encouraged for monks of most traditions, as it is believed to promote wakefulness. Generally speaking, the vast majority of Buddhists and Buddhist sects denounce and have historically frowned upon the use of any intoxicants by an individual who has taken the five precepts.