There is no single threshold that makes someone “an alcoholic.” The medical world now uses the term Alcohol Use Disorder (AUD), which exists on a spectrum from mild to severe. You qualify for a diagnosis if you meet at least 2 out of 11 specific criteria within the same 12-month period. The more criteria you meet, the more severe the disorder.
The 11 Criteria Doctors Actually Use
The current diagnostic standard lists 11 patterns of behavior and physical responses. You don’t need to check every box. Meeting just two in the same year is enough for a mild diagnosis. Here’s what clinicians look for:
- Drinking more or longer than you originally intended
- Wanting to cut back or trying to, but not being able to
- Spending a lot of time drinking or recovering from drinking
- Craving alcohol when you’re not drinking
- Failing to meet obligations at work, school, or home because of drinking
- Continuing to drink even though it’s causing problems in your relationships
- Giving up activities you used to enjoy in favor of drinking
- Drinking in situations where it’s physically dangerous (like before driving)
- Continuing to drink despite knowing it’s worsening a physical or mental health problem
- Needing more alcohol to get the same effect you used to get (tolerance)
- Experiencing withdrawal symptoms like shakiness, sweating, nausea, insomnia, a racing heart, or restlessness when alcohol wears off
The severity breakdown is straightforward: 2 to 3 criteria is mild, 4 to 5 is moderate, and 6 or more is severe. Someone with severe AUD looks very different from someone with mild AUD, but both have a real, diagnosable condition.
How Much Drinking Is Too Much
AUD is defined by behavior and consequences, not by a specific number of drinks. But understanding what counts as heavy or binge drinking gives useful context. In the U.S., one standard drink is 12 ounces of regular beer (5% alcohol), 5 ounces of wine (12% alcohol), or 1.5 ounces of liquor (40% alcohol). Many cocktails and craft beers contain two or even three standard drinks in a single glass.
Binge drinking means four or more drinks on one occasion for women, or five or more for men. Heavy drinking means eight or more drinks per week for women, or 15 or more per week for men. You can be a heavy drinker without having AUD, and you can have AUD without drinking every day. But heavy and binge drinking patterns significantly raise the risk of developing the disorder over time.
Why “Functioning Normally” Doesn’t Rule It Out
One of the biggest misconceptions is that someone with a drinking problem can’t hold a job, maintain friendships, or keep their life together. Many people with AUD do all of those things, at least for a while. They drink more than recommended limits but hide it well because they’ve built a high tolerance and can consume large amounts without appearing intoxicated.
Common patterns in this group include using alcohol to manage stress or anxiety, drinking heavily on weekends while staying sober during the workweek, experiencing blackouts or memory gaps they don’t mention to anyone, and gradually withdrawing from friends and family. Over time, subtle signs emerge: missed deadlines, declining performance, strained relationships, neglected sleep and nutrition. The fact that someone still “functions” doesn’t mean alcohol isn’t doing damage. It often just means the consequences haven’t become visible yet.
What Happens in Your Brain Over Time
Alcohol triggers the brain’s reward system by increasing the activity of chemicals that produce pleasure and relaxation. With repeated heavy drinking, the brain adapts. It takes more alcohol to produce the same pleasurable feeling, which is how tolerance develops. At the same time, the brain becomes less capable of producing those feelings on its own, which can drive people to drink more just to feel normal.
This shift is why willpower alone often isn’t enough. The disorder changes brain chemistry in ways that make quitting genuinely difficult, not just uncomfortable. It’s a biological process, not a character flaw.
Physical Warning Signs
Your body offers concrete signals that drinking has crossed into dependence. Withdrawal symptoms are among the clearest. They typically begin within 6 to 24 hours after the last drink and peak between 24 and 72 hours. Mild withdrawal looks like headaches, anxiety, insomnia, and shakiness. More severe withdrawal can involve hallucinations (within 24 hours), seizures (24 to 48 hours), and a dangerous condition called delirium tremens (48 to 72 hours). Some people experience prolonged withdrawal effects like insomnia and mood changes that last weeks or months.
Beyond withdrawal, long-term heavy drinking affects nearly every organ system. It weakens the heart muscle and raises the risk of high blood pressure, irregular heartbeat, and heart attack. It damages the lining of the digestive tract, increasing the risk of colorectal, esophageal, and oral cancers. It disrupts hormone balance, contributing to thyroid problems, abnormal cholesterol, reproductive issues, and increased risk of type 2 diabetes. It impairs the immune system, making infections harder to fight and recovery from injury slower. And it causes nerve damage that can produce numbness in the arms and legs or painful burning in the feet.
A Quick Self-Check
Doctors often use a rapid three-question screening tool called the AUDIT-C, scored on a scale of 0 to 12. It asks how often you drink, how many drinks you have on a typical day when you’re drinking, and how often you have six or more drinks on one occasion. A score of 4 or higher for men, or 3 or higher for women, flags hazardous drinking or a possible alcohol use disorder. It’s not a diagnosis on its own, but it’s a reliable first signal that your drinking pattern deserves a closer look.
If you recognize yourself in two or more of the 11 criteria listed above, that’s not a personality judgment. It’s a medical pattern with effective treatments, and catching it at the mild stage makes a meaningful difference in outcomes.