Wellness
Caffeine: The World's Most Popular Stimulant Explained
An overview of caffeine, a natural stimulant found in coffee and tea, and its effects on the brain, body, and overall wellness.
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What is it?
Caffeine is a natural stimulant for the central nervous system, belonging to the methylxanthine class. It is the most widely consumed psychoactive substance in the world, naturally found in coffee beans, tea leaves, and cacao plants. Caffeine works by blocking adenosine, a neurotransmitter that causes tiredness, which in turn makes you feel more alert and awake. It also increases the circulation of adrenaline and cortisol in the body. Common sources include coffee, tea, soft drinks, energy drinks, and chocolate.
Why is it trending?
Caffeine consumption is a persistent trend, fueled by the popularity of coffee culture and the booming energy drink market. Social media influencers often promote caffeinated products, contributing to their appeal, especially among adolescents and young adults. The demand for quick energy to manage busy lifestyles and improve athletic performance keeps caffeine in the spotlight. New products like highly concentrated caffeine pouches are gaining viral attention among teenagers online, marketed for enhanced gym performance and alertness.
How does it affect people?
In small doses, caffeine can enhance focus, mood, and physical performance. However, excessive consumption can lead to negative side effects like anxiety, restlessness, insomnia, headaches, and an increased heart rate. High intake may also cause digestive issues and dehydration. Long-term use can lead to tolerance, where larger doses are needed to achieve the same stimulating effect. For most healthy adults, up to 400mg of caffeine daily is considered safe, but some individuals are more sensitive to its effects.