Description
"Caffeine" is a naturally occurring stimulant present in coffee beans, tea leaves, cacao, and select botanical sources. Classified as a xanthine alkaloid, it engages with neurotransmitter systems by modulating adenosine receptors, influencing wakefulness, cognitive function, and neural signaling. Furthermore, caffeine supports metabolic pathways involved in energy production and thermogenesis. It also influences physiological responses linked to mental focus and endurance. As a widely consumed bioactive compound, caffeine remains an essential element in both traditional and modern dietary habits.
Functions in the Body
Category
Deficiency Symptoms
Since caffeine is not an essential nutrient, there are no deficiency symptoms associated with its absence.
Synergists & Antagonists
Caffeine works synergistically with creatine and beta-alanine to enhance athletic performance. It may antagonize sleep-inducing supplements such as melatonin.
Caffeine
Warnings
Excessive caffeine intake can be dangerous, especially during pregnancy or for individuals with type 2 diabetes. It may also worsen anxiety symptoms, disrupt sleep patterns, and temporarily increase blood pressure when consumed in large amounts.
Food Sources
Caffeine is found in coffee, black tea, green tea, chocolate, energy drinks, and energy bars.
Time Frame
It is best to consume caffeine in the morning or early afternoon to avoid disrupting sleep.
Depleted By
There are no specific dietary or lifestyle factors that deplete caffeine, but its effects can diminish with regular consumption due to tolerance development.