Addiction, also called a substance use disorder (SUD), is a medical condition in which a person continues to use alcohol or drugs despite serious harm to their health, relationships, or responsibilities. (Source) The American Psychiatric Association describes addiction as a brain disease marked by compulsive substance use even when someone wants to stop or knows it is dangerous. (Source)

In the United States, millions of people live with a substance use disorder each year. The 2022 National Survey on Drug Use and Health estimated that more than 48 million people aged 12 or older had a substance use disorder in the past year. (Source) That number includes alcohol use disorder, drug use disorders, or both.

Addiction affects:

• Physical health (heart, liver, brain, immune system)
• Mental health (anxiety, depression, trauma symptoms)
• Relationships and family life
• Work or school performance
• Finances and legal status

Substance use disorders exist on a spectrum from mild to severe. The earlier a problem is recognized and treated, the better the chances of preventing long‑term damage and supporting lasting recovery. (Source)

Clinicians no longer separate “substance abuse” and “substance dependence” as different diagnoses. In the current Diagnostic and Statistical Manual of Mental Disorders (DSM‑5‑TR), these are combined into one diagnosis: substance use disorder, which is categorized as mild, moderate, or severe based on the number of symptoms. (Source)

Not everyone who drinks or experiments with drugs will develop an addiction. However, when substance use progresses through certain stages, the risk of a substance use disorder increases significantly. (Source)

A helpful way to understand this progression is to look at four common stages:

1. First use / experimentation
2. Regular use
3. Risky and problematic use
4. Dependence and addiction

People can move through these stages at different speeds. Some may stay in early stages for years; others may progress to addiction quickly, especially if they have genetic vulnerability, co‑occurring mental health conditions, or use high‑risk substances like opioids or stimulants. (Source)

Most substance use begins with experimentation. In this stage, a person is typically using alcohol or drugs infrequently and often in social or situational contexts.

Common reasons for first use include:

• Curiosity or wanting to try something new
• Peer pressure or wanting to fit in
• Coping with stress, grief, or major life changes
• Self‑medicating untreated mental health symptoms like anxiety, depression, or trauma‑related distress (Source)

Experimentation is usually voluntary and may not yet cause obvious negative consequences at home, work, or school. However, early use—especially during the teen and young adult years—can change how the brain develops and increase the risk of later addiction. (Source)

Warning signs in the experimentation stage can include:

• Using alcohol or drugs to feel more comfortable in social situations
• Binge drinking or taking more than intended on some occasions
• Minimizing or joking about risky behaviors while under the influence

Some people are able to stop after experimenting. Others notice that substances seem to “solve” a problem—helping them relax, sleep, or escape difficult emotions—and begin to rely on them more often. This can lead into the next stage: regular use.

In the regular use stage, alcohol or drug use becomes more predictable and frequent. A person may not be using every day, but substance use starts to follow a pattern.

Examples of regular use patterns include:

• Drinking every weekend or at every social event
• Using prescription medications in higher doses or more often than prescribed
• Routinely using substances after work to “unwind”
• Needing alcohol or drugs to feel comfortable in certain situations

At this point, some people can still maintain work, school, and relationships, which can make it easy to overlook the seriousness of the behavior. However, the risk of developing a substance use disorder increases as use becomes more frequent and the brain adapts to the presence of the substance. (Source)

Warning signs in the regular use stage may include:

• Needing more of the substance to feel the same effect (early tolerance)
• Thinking about the next opportunity to drink or use
• Hiding or downplaying the amount used
• Changes in mood, sleep, or appetite related to substance use
• Beginning to withdraw from some friends or activities that do not involve substances

Even if someone is considered a “social user,” regular patterns of use can lay the groundwork for risky and problematic use, especially when stress, trauma, or major life changes occur.

The shift from regular use to risky and problematic use can happen gradually or very quickly. In this stage, substance use begins to cause clear problems, but the person continues to use despite these consequences. (Source)

Risky and problematic use may look like:

• Driving under the influence or riding with an impaired driver
• Mixing substances (for example, alcohol with benzodiazepines or opioids)
• Blackouts, memory gaps, or not remembering events while using
• Missing work, school, or important obligations because of use or hangovers
• Strained relationships, arguments, or broken trust related to substance use
• Using substances to cope with anxiety, depression, trauma, or physical pain instead of seeking appropriate treatment

During this stage, the person may:

• Experience strong cravings for the substance
• Feel irritable, anxious, or depressed when not using
• Spend more time obtaining, using, and recovering from substances
• Make promises to cut back but find it hard to follow through

Positive reinforcement plays a powerful role here. Substances may produce feelings of euphoria, relief, or confidence, which the brain begins to associate with reward. Over time, the brain’s reward system becomes less sensitive to natural pleasures and more focused on the substance, driving repeated use even when the person knows it is harmful. (Source)

At this stage, a substance use disorder is often present, even if the person does not yet identify as having an addiction. Early intervention—such as outpatient counseling, support groups, or intensive outpatient treatment—can be especially effective in this phase. (Source)

In the final stage, dependence and addiction are firmly established. The brain and body have adapted to the ongoing presence of the substance, and stopping suddenly can cause significant withdrawal symptoms. (Source)

Dependence generally involves three related processes:

• Tolerance – Needing more of the substance over time to achieve the same effect. (Source)
• Physical dependence – Experiencing withdrawal symptoms (such as shaking, sweating, nausea, anxiety, or insomnia) when cutting back or stopping use.
• Psychological dependence – Intense cravings, preoccupation with using, and repeated use despite wanting to quit or having serious consequences.

In this stage, substance use often feels compulsive and out of control. A person may:

• Use more frequently or in larger amounts than intended
• Spend much of the day thinking about, obtaining, using, or recovering from substances
• Continue using despite serious health problems, relationship breakdowns, job loss, or legal issues
• Experience withdrawal symptoms if they try to stop or reduce use
• Feel unable to imagine life without alcohol or drugs

Substance use disorders at this level can severely impact every area of life, including physical and mental health, safety, finances, and overall quality of life. (Source) Many people in this stage need structured, professional treatment—often starting with medical detox followed by residential or intensive outpatient care—to safely stop using and begin recovery. (Source)

Addiction is often described as a chronic, relapsing brain disease. That means symptoms can return, especially during times of stress, but with the right support, people can and do recover and go on to live healthy, fulfilling lives. (Source)

Research shows that evidence‑based treatment for substance use disorders is as effective as treatment for other chronic health conditions such as diabetes, asthma, or high blood pressure. (Source) Treatment works best when it addresses the whole person—not just substance use, but also mental health, medical needs, family dynamics, and social support.

Effective addiction treatment may include:

• Medically supervised detox to manage withdrawal safely when needed
• Residential or inpatient treatment for structured, intensive support
• Partial hospitalization or intensive outpatient programs
• Individual, group, and family therapy
• Trauma‑informed care and treatment for co‑occurring mental health disorders
• Medication‑assisted treatment (MAT) for opioid or alcohol use disorders when appropriate
• Relapse‑prevention planning and ongoing aftercare

Because addiction is progressive, seeking help as early as possible—no matter which stage you or your loved one are in—can reduce harm and improve long‑term outcomes. (Source)

You do not have to “hit rock bottom” to deserve help. Any concern about your substance use—or a loved one’s use—is a valid reason to reach out for support.

It may be time to talk with a professional if you or someone you care about:

• Cannot imagine life without alcohol or drugs
• Has tried to cut back or quit but cannot stay stopped
• Keeps using despite health problems, relationship conflicts, or legal or financial issues
• Lies about or hides the amount they are using
• Avoids friends, family, or activities that do not involve substances
• Has given up hobbies, goals, or responsibilities because of substance use
• Cannot clearly see the impact their use is having on their life

A substance use professional or treatment center can help assess which stage of addiction may be present and recommend the level of care that best fits your needs. (Source)

A substance use disorder is a chronic, progressive condition—but it is also highly treatable. With compassionate, evidence‑based care, many people regain their health, rebuild relationships, and create a meaningful life in recovery. (Source)

Cardinal Recovery provides comprehensive treatment for drug and alcohol addiction, with a focus on healing both the root causes of addiction and the symptoms that have developed over time. Our team understands that no two recovery journeys are the same, and we work with you to create a personalized treatment plan.

Depending on your needs, your treatment plan may include:

• Medical and clinical assessment to understand your history, current symptoms, and goals
• Detox referrals or coordination when medically supervised withdrawal is needed
• Residential or outpatient treatment in a structured, supportive environment
• Individual therapy to explore underlying issues such as trauma, grief, anxiety, or depression
• Group therapy and psychoeducation to build skills, insight, and connection with others in recovery
• Family support and counseling to help loved ones understand addiction and participate in the healing process
• Relapse‑prevention planning and aftercare support to maintain progress after treatment

Cardinal Recovery can be especially helpful if you or your loved one:

• Cannot control how much or how often you use
• Keep using despite serious consequences
• Feel unable to stop on your own
• Have tried to quit before and returned to use
• Feel isolated, ashamed, or hopeless about your substance use

Our goal is to help you stabilize, understand the stages of addiction you have experienced, and build the tools and support you need for long‑term recovery.

Recovery does not end when formal treatment is complete. Long‑term support is one of the strongest predictors of sustained recovery from a substance use disorder. (Source)

After treatment, many people benefit from:

• Ongoing individual or family counseling
• Peer‑support groups such as Alcoholics Anonymous (AA), Narcotics Anonymous (NA), or other mutual‑help groups
• Al‑Anon or similar groups for family members and loved ones
• Sober living or recovery housing when a structured environment is helpful
• Regular check‑ins with medical and mental health providers

These supports can help you:

• Maintain the progress you made in treatment
• Navigate stress, triggers, and life transitions without returning to substance use
• Strengthen healthy relationships and boundaries
• Continue growing in your recovery and personal goals

Understanding the stages of addiction can give you a clearer picture of how substance use developed and, more importantly, how it can change. No matter where you or your loved one are today, help is available. Cardinal Recovery’s team can answer your questions, explain treatment options, and support you in taking the next step toward healing.