Body · Substances: the facts
Alcohol: knowing the facts
Alcohol is the most common drug used by people under 21, and about 4,000 young people die from excessive drinking each year. One standard drink is 12 oz of 5% beer, 5 oz of wine or 1.5 oz of liquor, and a strong beer or mixed drink can be two or more. Blood alcohol keeps rising after someone stops drinking or passes out, so "sleeping it off" can kill. Know the overdose signs (confusion, can't stay awake, vomiting, slow or irregular breathing, cold or bluish skin), and if you see even one, call 911 and stay. Never mix alcohol with sleep, anxiety or opioid medicines.
You'll need
- 911 and a trusted ride saved in your phone
- A plan with friends before you go out
What to know
- Know the overdose signs: confusion or stupor; trouble staying conscious or can't be woken up; vomiting; seizures; slow breathing (fewer than 8 breaths a minute) or irregular breathing (10 seconds or more between breaths); slow heart rate; clammy skin; no gag reflex; very low body temperature, bluish skin or paleness. Source: NIAAA1
Standard drinks at a glance
Each of these has about 14 grams of pure alcohol. Source: NIAAA2
| Drink | One standard drink |
|---|---|
| Regular beer (about 5%) | 12 ounces |
| Wine (about 12%) | 5 ounces |
| Liquor (about 40%) | 1.5 ounces, one shot |
| Strong beer (10%) | 12 ounces counts as 2 drinks |
Dangerous combinations
- Opioids, prescription or illegal, like oxycodone, morphine or heroin Source: NIAAA1
- Sleep medicines like zolpidem and eszopiclone Source: NIAAA1
- Anti-anxiety medicines like diazepam and alprazolam Source: NIAAA1
- Even over-the-counter antihistamines Source: NIAAA1
- Mixing increases the effects and can cause an overdose with even moderate drinking. Source: NIAAA1
Before a party
- Check in with friends before, during and after, and agree how everyone's getting home. Source: RAINN6
- Keep track of your drink and know what's in it. Source: RAINN6
- Notice if a friend suddenly seems much drunker than expected, and help them leave or get help. Source: RAINN6
- Save 911 and a sober ride in your favorites.
- Decide in advance that you'll call for help, so you don't hesitate.
See it done
Video by TED-Ed Nonprofit
How does alcohol make you drunk?
Full title on YouTube: “How does alcohol make you drunk? - Judy Grisel”2020 · Checked October 3, 2026
This explains what alcohol does inside your body. The overdose signs, and what to do (call 911 and stay with them), are in the steps.
Video won't load at school or work? No problem. Everything you need is in the steps; the video's just a bonus. Watch it on YouTube later.
If it doesn't work
- Worried about your own drinking, or someone else's? SAMHSA's National Helpline, 1-800-662-4357, is free, confidential, and open 24/7, in English and Spanish. Source: SAMHSA5
- Feeling hopeless or thinking about hurting yourself? Call or text 988 any time. See 988: when and how to reach out.
- Someone's been drinking and wants to drive? Don't get in the car. Drinking and driving puts everyone at risk. Source: CDC4 Call a parent, a sober friend, or a ride.
Good to know
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Why it hits young people harder
Young people who drink are more likely to have injuries, lower grades, legal trouble, violence and sexual violence, and slower brain development that can affect memory. People who start drinking earlier have a higher risk of alcohol problems later. Source: CDC4
The first six weeks of college
NIAAA calls the first six weeks of freshman year a vulnerable time for harmful drinking because of expectations and social pressure. Source: NIAAA3
Take it with you
Printable cardDownload card (PDF)Sources
- National Institute on Alcohol Abuse and Alcoholism Understanding the dangers of alcohol overdose
- National Institute on Alcohol Abuse and Alcoholism What is a standard drink?
- National Institute on Alcohol Abuse and Alcoholism Fall semester: the risks of college drinking
- Centers for Disease Control and Prevention Underage drinking
- Substance Abuse and Mental Health Services Administration National Helpline
- RAINN Campus sexual violence: prevention and response
Lesson B10.1 · Last checked October 2, 2026 against the sources listed.
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