How CAFFEINE affects YOUR BRAIN?
Автор: HumanBody 3D
Загружено: 2026-01-23
Просмотров: 822
Описание:
1. Adenosine Blockage and the "Energy Debt"
Caffeine is structurally similar to adenosine—the molecule that signals fatigue to the brain. Caffeine occupies adenosine receptors, effectively "switching off" the feeling of sleepiness.
The Harm: The brain does not rest when it needs to. Once the caffeine wears off, the accumulated adenosine floods the receptors, leading to a sudden crash and a "caffeine slump."
2. Disruption of Deep Sleep Phases
Even if you fall asleep after a cup of coffee, caffeine reduces the duration of deep sleep.
The Harm: It is during the deep phase that the brain performs "self-cleaning" from toxins (via the glymphatic system). Chronic lack of deep sleep impairs memory and increases the risk of long-term cognitive decline.
3. Dependency and Tolerance Formation
With regular use, the brain adapts by creating more adenosine receptors.
The Harm: You begin to need more and more caffeine just to feel "normal." Without it, a person becomes irritable, sluggish, and suffers from headaches (withdrawal syndrome).
4. Anxiety and Nervous System Overload
Caffeine stimulates the release of adrenaline and cortisol (the stress hormone).
The Harm: In sensitive individuals, this triggers a "fight or flight" response, increased anxiety, panic attacks, and an inability to focus on a single task due to overstimulation.
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