How Alcohol Metabolism Works
The liver metabolizes alcohol at approximately 0.015% BAC per hour — about one standard drink per hour. This rate is relatively constant and cannot be sped up by:
- ❌ Drinking coffee or energy drinks
- ❌ Eating food (after drinking)
- ❌ Drinking water
- ❌ Exercising or sweating
- ❌ Cold showers
The only thing that sobers you up is time.
Time to Reach 0.00% BAC
| Starting BAC | Hours to 0.00% | Approx drinks (160 lb man) |
|---|---|---|
| 0.02% | 1.3 hours | ~1 drinks |
| 0.04% | 2.7 hours | ~2 drinks |
| 0.06% | 4 hours | ~3 drinks |
| 0.08% | 5.3 hours | ~4 drinks |
| 0.10% | 6.7 hours | ~5 drinks |
| 0.15% | 10 hours | ~7 drinks |
| 0.20% | 13.3 hours | ~10 drinks |
| 0.30% | 20 hours | ~15 drinks |
Factors That Affect Metabolism Rate
- Body weight: Heavier people have more body water — alcohol distributes more, resulting in lower BAC
- Sex: Women typically have lower body water % → higher BAC per drink
- Liver health: Liver disease slows metabolism significantly
- Food eaten before drinking: Slows absorption rate (not metabolism rate)
- Medications: Many drugs interact with alcohol metabolism
- Genetics: Some people lack efficient alcohol dehydrogenase enzymes
Frequently Asked Questions
How fast does the body metabolize alcohol?
The liver metabolizes alcohol at approximately 0.015% BAC per hour, or about one standard drink per hour. This is equivalent to 7-10 grams of pure alcohol per hour.
What is the morning after drinking calculator?
A "morning after" calculator estimates your BAC at a future time. Input your drinks, current time, and your weight. It calculates BAC now and projects when you'll reach 0.00% — useful for next-morning sobriety checks.
Can you speed up alcohol metabolism?
No. The liver processes alcohol at a fixed rate of ~0.015% BAC per hour. Coffee, food, water, and exercise do not speed this up — they may just make you feel more alert while still impaired.
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