Pourquoi t’as mal à la tête après une soirée ? (Spoiler : c’est pas que l’alcool)

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, that feeling like your heart has moved into your brain?
But in reality, several culprits share the blame: dehydration, vasodilation, inflammation and a drop in neurotransmitters.

Let’s break down what’s making you suffer so much.

 

🧠 Your brain gets dehydrated

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

“The loss of extracellular fluid caused by ethanol can cause indirect meningeal pain.” Swift & Davidson, Alcohol Health & Research World, 1998

 

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