What alcohol does in the body
Written by The Kalcule Team · Last updated 2026年8月18日
Ethanol is absorbed, distributed in body water, and cleared mainly by the liver. Effects on judgement start before many people feel “drunk.” This is education, not a drinking guide.
Absorption and peak
Food slows absorption. Carbonation and drinking quickly raise the peak. The BAC calculator estimates a number; impairment is not only that number.
Brain and coordination
Even “low” BAC can slow reaction time. That is why this site refuses to green-light driving.
Sleep, mood and calories
Alcohol fragments sleep and adds 7 kcal/g. It is not a health food. Calories still count in a deficit.
When to get help
If drinking is hard to control, see a clinician or a local addiction service. Related articles cover addiction and “sober up” myths.
常见问题解答
Alcohol effects and safety.
Public-health advice has moved away from “a glass of red is medicine.” Risk rises with dose. This site does not recommend drinking.
Absorption continues after the last sip. Waiting is not the same as being under the peak.
Total ethanol and drinking speed matter more than mixing folklore. Congeners in some drinks can worsen hangovers.
You can estimate; you cannot certify safety. The only safe driving BAC is not drinking and driving.
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