Why do coffee drinkers feel more clear headed after consuming caffeine? Why do some get a headache without it? Does caffeine cause any permanent brain changes and can the brain go back to ‘normal’ after years of caffeine use?

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Why do coffee drinkers feel more clear headed after consuming caffeine? Why do some get a headache without it? Does caffeine cause any permanent brain changes and can the brain go back to ‘normal’ after years of caffeine use?

In: Biology

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Your body has a “natural state” it likes to maintain that includes levels of chemicals called neurotransmitters and hormones. Regularly altering this with a drug will cause your body to compensate for the drug (tolerance). If you take the drug away, it will take your body time to go back to it’s natural state (withdrawal). Common side effects such as irritability, mood swings, shaking, headaches are mostly caused by neutransmitter imbalances during the time it takes your body to return to normal.

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