Caffeine as a Common Stimulant

Caffeine is often considered the most widely consumed stimulant in the world, with effects that mimic those of conventional medications. It has a history dating back thousands of years, with origins in beverages like tea and coffee. Caffeine acts by blocking adenosine receptors in the brain, thereby increasing dopamine release, which positively impacts mood, alertness, and cognitive performance. Understanding caffeine's role and how it functions within the body contextualizes its potential as both a stimulant and a substance with various side effects.