Caffeine is a bitter substance which acts as a fast acting, central nervous system (CNS) stimulant. It occurs naturally in many plants, such as coffee beans, tea leaves, kola nuts and cacao pods.
Caffeine is very well known and widely used for promoting wakefulness and increasing alertness and attentional performance.
A daily dose of caffeine (never exceeding 400 milligrams per day) may:
- Prevent diabetes
- Boost physical performance
- Help weight loss
- Decrease risk of liver, colorectal and melanoma cancer
- Delay dementia
- Help digestive irritation
- Improve focus
