Caffeine: cognitive and physical performance enhancer or psychoactive drug?
Simone Cappelletti1, Daria Piacentino, Piacentino Daria2
1Department of Anatomical, Histological, Forensic Medicine and Orthopedic Sciences, "Sapienza" University of Rome, Rome, Italy;
Current Neuropharmacology
|June 16, 2015
Summary
Caffeine enhances focus and performance but can lead to abuse and dependence. Even low doses may be dangerous due to interactions or individual health factors, posing health risks.
Area of Science:
- Pharmacology and Toxicology
- Neuroscience
- Cardiovascular Physiology
Background:
- Global increase in caffeine consumption for cognitive and physical enhancement.
- Known cardiovascular and central nervous system effects of caffeine.
- Growing concerns regarding caffeine abuse, dependence, and intoxication.
Purpose of the Study:
- To review caffeine's mechanisms of action, including adenosine antagonism.
- To summarize findings on caffeine use, abuse, dependence, and intoxication.
- To examine potential detrimental health effects and lethal outcomes.
Main Methods:
- Comprehensive literature review on caffeine's physiological and psychological effects.
- Analysis of mechanisms involving adenosine antagonism, calcium mobilization, and phosphodiesterase inhibition.
- Examination of reported cases of caffeine abuse, dependence, and intoxication.
Main Results:
- Caffeine impacts cardiovascular function (positive inotropic/chronotropic) and the CNS (locomotor stimulation, anxiogenic effects).
- Mechanisms include adenosine antagonism, intracellular calcium mobilization, and phosphodiesterase inhibition.
- Caffeine abuse and dependence are significant issues, with intoxication posing severe health risks.
Conclusions:
- Caffeine's effects on health warrant careful consideration due to its widespread use.
- The concepts of toxic and lethal doses are relative and can be influenced by interactions and individual factors.
- Further research is needed to understand the full spectrum of caffeine's risks, especially in vulnerable populations.
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