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Caffeine is a chemical stimulant that can be found naturally in coffee beans, tea leaves, cacao beans, guarana berries and yerba mate leaves and quickly boosts alertness and energy levels. It can also be made synthetically and added to drinks, food, tablets and supplements.
Irritability is an unpleasant feeling of being overly sensitive to stimulation and easily annoyed. The caffeine found in coffee can produce a heightened sense of perception by stimulating the brain. This effect makes a person more aware of mild annoyances, thereby increasing irritability.
Caffeine is possibly unsafe when used for a long time or in doses over 400 mg daily. Caffeine can cause insomnia, nervousness, restlessness, nausea, increased heart rate, and other side effects.
We report that, for healthy adults, caffeine consumption is relatively safe, but that for some vulnerable populations, caffeine consumption could be harmful, including impairments in cardiovascular function, sleep, and substance use.
Caffeine use disorder is a problematic pattern of caffeine consumption characterized by a persistent desire to cut down or control use of the substance along with unsuccessful efforts to do so despite problems caused or worsened by caffeine.
Caffeine does have its cognitive perks — including boosting alertness, energy and feelings of well-being — but overuse can cause a range of unpleasant side effects, including troubled sleep, jitters, irritability and gastric distress.
Common Side Effects: Caffeine can increase energy levels and alertness, but side effects can include irritability, jitters, anxiety, rapid heart rate, and insomnia. Caffeine is an alkaloid found in a wide variety of plants including coffee beans, tea leaves, and cocoa beans.
Even some medications may contain caffeine without your knowledge. This ingredient almost always causes some symptoms. At a minimum, you may feel more energetic, but over time, too much...
Although this drug is most commonly sourced from coffee beans, it can also naturally occur in certain types of tea and cacao beans and as an additive to soda and energy drinks. Caffeine consumption primarily alleviates fatigue and drowsiness but has numerous additional therapeutic applications.
Caffeine is considered the most commonly used psychoactive drug in the world. A majority of adults consume it daily, and research is being done on its health benefits and consequences. We may love our caffeine, but what exactly is it? Caffeine is the common name for 1,3,7-trimethylxanthine.