Yes, alcoholism is a form of substance abuse. Alcohol contains ethanol, which the World Health Organization classifies as a psychoactive and toxic substance with dependence-producing properties. It acts on the brain’s reward and stress systems in the same ways as other addictive drugs, and it is treated under the same diagnostic, legal, and insurance frameworks as other substance use disorders.
That said, the terminology has shifted. The word “alcoholism” is still widely used in everyday conversation, but it no longer appears in clinical diagnoses. Understanding the modern language can help you navigate treatment options, insurance coverage, and conversations with healthcare providers.
Why the Term “Alcoholism” Changed
Until 2013, the main diagnostic manual used by clinicians in the United States (the DSM-IV) split alcohol problems into two separate diagnoses: alcohol abuse and alcohol dependence. “Abuse” described harmful drinking patterns, like getting into dangerous situations or having relationship problems because of alcohol. “Dependence” described physical and psychological reliance, including tolerance and withdrawal symptoms.
The updated manual, DSM-5, merged both into a single diagnosis called alcohol use disorder, or AUD. Instead of two categories with a hard dividing line, AUD uses a spectrum. A person who meets any 2 of 11 criteria within a 12-month period receives the diagnosis, and severity is graded as mild, moderate, or severe based on how many criteria they meet. The revision also dropped legal problems as a criterion and added craving, which hadn’t been formally included before.
The term “alcohol use disorder” now encompasses what people once called alcohol abuse, alcohol dependence, alcohol addiction, and alcoholism. So if someone says they have alcoholism, a clinician would evaluate them for AUD. If someone asks whether alcoholism is substance abuse, the clinical answer is that it falls squarely within the category of substance use disorders.
How Alcohol Affects the Brain Like Other Drugs
Alcohol hijacks the same brain circuitry that other addictive substances target. When you drink, ethanol triggers a surge of dopamine in the brain’s reward pathway, a circuit that normally helps you orient toward things that are good for survival, like food and social connection. This dopamine release creates the pleasurable feeling associated with drinking. Over time, the brain adapts. You need more alcohol to get the same effect (tolerance), and the reward system becomes less responsive to everyday pleasures.
Alcohol also acts on the brain’s natural pain-relief system (the opioid system), its primary calming chemical (GABA), its main excitatory chemical (glutamate), and serotonin, which regulates mood. This is not a minor overlap with other drugs. It is the same fundamental set of neurological changes seen in addiction to opioids, stimulants, and other substances. The brain physically reorganizes itself around alcohol in ways that make quitting difficult, which is why alcohol withdrawal can produce symptoms ranging from shakiness and insomnia to seizures.
What the 11 Diagnostic Criteria Look Like
The criteria for alcohol use disorder are designed to capture the full range of problematic drinking. They include questions like whether you’ve repeatedly drunk more than you intended, whether you’ve tried to cut down but couldn’t, whether you’ve spent a lot of time drinking or recovering from drinking, and whether you’ve experienced cravings. Other criteria ask about giving up activities you used to enjoy, continuing to drink despite relationship problems or worsening depression and anxiety, and developing tolerance or withdrawal symptoms.
Meeting 2 to 3 criteria qualifies as mild AUD. Four to 5 is moderate. Six or more is severe. A person who has never experienced physical withdrawal can still receive a diagnosis if they meet enough of the other criteria. This is one reason the old distinction between “abuse” and “dependence” was abandoned: the line between them was often blurry, and many people fell through the gap.
Risk Factors for Developing AUD
Alcohol use disorder develops through a combination of genetic vulnerability and environmental triggers. Research into gene-environment interactions shows that the two don’t simply add up. They interact in complex ways, with certain genetic profiles making a person more sensitive to environmental pressures.
On the environmental side, the most consistent risk factors involve close relationships. Parental alcoholism, peer influence, and adverse life events (childhood maltreatment, early trauma, family violence, significant loss) all increase risk substantially. At a broader level, community factors matter too. Living in neighborhoods with a high density of alcohol outlets is linked to greater consumption and more alcohol-related problems. Cultural norms around drinking, long-term poverty, and experiences of racial discrimination are also associated with heavier drinking and higher rates of AUD.
Co-Occurring Mental Health Conditions
AUD rarely travels alone. Roughly 37% of people with a lifetime AUD diagnosis also meet criteria for major depression. About one in five has a lifetime anxiety disorder, and rates of PTSD are high, particularly among women with AUD (around 26%). A third of adults with AUD also have attention-deficit hyperactivity disorder. Historically, about 41% of men and 47% of women with AUD have also had at least one other substance use disorder.
Nicotine dependence is especially common: about 35% of people with current AUD also have current nicotine dependence. Personality disorders show up frequently as well, with antisocial personality disorder present in a median of 18% of people with AUD and borderline personality disorder in about 21%. These overlapping conditions can complicate treatment, since addressing alcohol alone without treating the co-occurring disorder often leads to relapse.
The Scale of Alcohol-Related Harm
Excessive alcohol use is a leading preventable cause of death in the United States. About 178,000 people die from excessive drinking each year, based on 2020-2021 data from the CDC. That represents a 29% increase from just a few years earlier, when the estimate was 138,000 deaths per year (2016-2017). These numbers include deaths from liver disease, alcohol-related cancers, overdoses involving alcohol, and injuries like car crashes and falls.
Insurance Coverage and Legal Protections
Because alcohol use disorder is classified as a substance use disorder, it falls under the same insurance protections as other SUDs and mental health conditions. The Mental Health Parity and Addiction Equity Act requires that group health plans and insurers cannot impose more restrictive financial requirements or treatment limitations on substance use disorder benefits than they do on medical and surgical benefits. In practical terms, this means your copays, visit limits, and prior authorization requirements for AUD treatment should be no more burdensome than those for, say, diabetes care or a knee surgery.
The international diagnostic system used outside the United States (ICD-11) takes a slightly different approach, distinguishing between harmful use of alcohol and alcohol dependence rather than combining them into one spectrum. But the trend is the same: both systems recognize alcohol problems as substance use disorders that exist on a continuum of severity, and both systems entitle people to the same level of care available for any other medical condition.