Caffeine

Definition

Caffeine is a natural stimulant commonly found in coffee, tea, and chocolate that helps boost energy and alertness.

Scientific / Technical Definition

Caffeine, a central nervous system stimulant, is an alkaloid derived from a variety of plants. It is metabolized by the liver and works by blocking the action of adenosine, a neurotransmitter that relaxes the brain and promotes sleepiness. This enhances neural activity and releases neurotransmitters like dopamine and norepinephrine.

Benefits

• Increases alertness and concentration
• Enhances physical performance
• May aid in weight loss by boosting metabolism
• Improves mood and reduces the risk of depression
• Potentially lowers the risk of neurological diseases like Alzheimer's and Parkinson's

Examples

• Coffee
• Tea
• Chocolate
• Energy drinks
• Certain pain relievers and medications

Additional Information

• sideEffects: Potential side effects include insomnia, nervousness, restlessness, stomach irritation, nausea, and increased heart rate. Consuming too much caffeine can lead to dependency and withdrawal symptoms.

Related Terms

• Stimulants
• Coffee
• Energy Drinks
• Theobromine

References

• Caffeine: Effects on Health and Performance
• The Safety and Health Effects of Caffeine