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Caffeine dependence can cause a host of physiological effects if caffeine consumption is not maintained. Withdrawal symptoms may include headaches, fatigue, difficulty concentrating, lack of motivation, mood swings, nausea, insomnia, dizziness, cardiac issues, hypertension, anxiety, backaches, and joint pain; these can range in severity from mild to severe. [18]
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.
Caffeine is considered one of the most widely consumed drugs around the world. Around 80% of the world population consumes caffeine in one form or another. [2] It is found in coffee, tea, caffeinated alcoholic drinks, cocoa, chocolate, soft drinks, especially cola, and is an important component of energy drinks and other dietary supplements. [1]
Caffeine can be found in many products, but kids are most likely to encounter caffeine from these sources, according to the guidance: Decaf coffee or tea (2-15 milligrams) Bottled iced tea (20-80 ...
Dr. Brynna Connor, a specialist in family medicine, tells Yahoo Life that the Food and Drug Administration recommends no more than 400 mg of caffeine per day. “Anything beyond that is considered ...
It's now clear that under no circumstances should children or adolescents be given access to these beverages.
The beverages, which combine malt liquor or other grain alcohol with caffeine and juices at alcohol concentrations up to about 14 percent, had become popular among younger generations. Their consumption had been associated with increased risk of serious injury, drunken driving, sexual assault and other detrimental behavior.
Here's what immunologists say.