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Why does alcohol make you drunk?

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Answer: It messes with the chemicals that carry signals in your brain

It stops oxygen from getting to your brainWrong. Alcohol doesn't stop oxygen from reaching the brain. It crosses the blood-brain barrier and chemically interferes with how brain cells communicate.

It raises your blood sugar levelWrong. Alcohol actually lowers blood sugar (hypoglycemia). The feeling of being drunk comes from alcohol affecting the brain's signaling chemicals, not from sugar levels.

It messes with the chemicals that carry signals in your brainCorrect! Alcohol interferes with the chemicals that transmit signals in the brain. It boosts the effect of inhibitory chemicals, making you relaxed and sleepy, and blocks excitatory ones, impairing your thinking and coordination. That's why you feel drunk.

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