Why do you get a headache after a night out? (Spoiler: it's not just the booze)

Why do you get a headache after a night out? (Spoiler: it's not just the booze)

You think it's the alcohol pounding in your head, you see that feeling like your heart has moved into your brain?
But in reality, several culprits share the crime: dehydration, vasodilation, inflammation and a drop in neurotransmitters.

Let's decipher what makes you suffer so much.

 

🧠 The brain becomes dehydrated

Alcohol is a diuretic. You lose water. The volume of fluid around the brain decreases. And as it floats in a protective sea, it starts to "pull" on its membranes → headaches guaranteed.

"Ethanol-induced loss of extracellular fluid can cause indirect meningeal pain." Swift & Davidson, Alcohol Health & Research World, 1998

 

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