Addiction, also called a substance use disorder, is a medical condition in which a person continues to use alcohol or other drugs despite serious harm to their health, relationships, or responsibilities. (Source) The American Psychiatric Association describes addiction as a complex brain disorder characterized by compulsive substance use despite harmful consequences. (Source)

In the United States, millions of people live with a substance use disorder each year. Recent national survey data show that more than 48 million people aged 12 or older met criteria for a substance use disorder in 2022, highlighting how widespread this condition is. (Source)

Addiction affects the brain areas involved in reward, motivation, memory, and self-control. Over time, the brain adapts to repeated substance use, making it harder to feel pleasure from everyday activities and easier to feel intense cravings for alcohol or drugs. (Source) This is why simply “deciding to stop” is often not enough. Without support, many people find themselves returning to use even when they desperately want to quit.

Addiction can impact every area of life, including:

• Physical health (heart, liver, lungs, immune system, and more)
• Mental health (anxiety, depression, mood swings, psychosis)
• Relationships with family, partners, and friends
• Work or school performance and attendance
• Legal and financial stability

Although addiction is a serious and sometimes life-threatening illness, it is also treatable. Evidence-based treatment and ongoing support can help people achieve long-term recovery and rebuild their lives. (Source)

Most people who develop a substance use disorder move through a series of stages: experimentation, regular use, risky or problematic use, and finally dependence and addiction. Not everyone who experiments with substances will become addicted, but understanding these stages can help you recognize when use is becoming dangerous.

The progression from first use to addiction is not the same for everyone, but many people follow a similar pattern. These four stages are a helpful framework for understanding how substance use can change over time:

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

Someone may move quickly through these stages or stay in one stage for a long time. Certain factors—such as starting use at a young age, having a family history of addiction, living with a mental health condition, or experiencing trauma—can increase the risk that substance use will progress to addiction. (Source)

Recognizing where you or a loved one might be in this process can make it easier to seek help before the consequences become more severe.

The first stage of addiction is initial use or experimentation. This stage often begins in the teenage or young adult years, but it can occur at any age.

In this stage, substance use is usually:

• Infrequent or occasional
• Social (such as at parties, bars, or gatherings)
• Driven by curiosity, peer pressure, or a desire to fit in
• Triggered by stress, grief, or major life changes such as divorce, job loss, or relocation

Experimentation is typically voluntary and may not yet cause noticeable social, legal, or health problems. (Source) Many people in this stage believe they are in full control of their use and may not see any reason for concern.

However, even early use can be risky, especially when it involves:

• Binge drinking (consuming a large amount of alcohol in a short time)
• Mixing substances (such as alcohol with prescription medications or illicit drugs)
• Using opioids, benzodiazepines, or other high-risk substances

Starting substance use at a younger age is strongly associated with a higher likelihood of developing a substance use disorder later in life. (Source) Some people are able to stop using after this stage on their own. Others find that substances seem to help them cope with stress, anxiety, or emotional pain, and they begin to use more often.

Because alcohol and some drugs are socially accepted in many adult environments, it can be easy for experimentation to gradually shift into a pattern of regular use without being noticed.

In the second stage, substance use becomes more predictable and frequent. A person may not be using every day, but there is a clear pattern.

Signs of regular use can include:

• Drinking or using drugs on weekends, after work, or at every social event
• Using substances to unwind, sleep, or cope with stress
• Thinking ahead about when and how to use
• Beginning to hide the amount or frequency of use from others

While some people may still feel they are “functioning” well, the risk of harm increases significantly as use becomes more regular. (Source) At this stage, people are more likely to:

• Engage in high-risk behaviors, such as driving under the influence or having unprotected sex
• Experience mood swings, irritability, anxiety, or low mood between episodes of use
• Notice early physical changes, such as needing more of the substance to feel the same effect (tolerance)

Friends and family might start to notice changes, such as:

• Pulling away from hobbies or activities they once enjoyed
• Spending more time with people who also drink or use heavily
• Making excuses for hangovers, missed events, or changes in behavior

Even if someone is considered a “social user,” a consistent pattern of regular use can lay the groundwork for addiction. The brain begins to associate substances with relief, pleasure, or escape, making it more likely that use will escalate over time. (Source)

The shift from regular use to risky or problematic use can happen gradually or very quickly. In this stage, substance use begins to cause clear problems in daily life, but the person continues to use anyway.

Common signs of risky or problematic use include:

• Using substances in dangerous situations, such as before driving, operating machinery, or caring for children
• Missing work, school, or important obligations due to use or recovery from use
• Strained relationships, arguments, or loss of trust with family and friends
• Legal issues, such as DUIs or public intoxication charges
• Financial problems related to spending money on alcohol or drugs

At this stage, a person may:

• Experience strong cravings for the substance
• Feel depressed, anxious, irritable, or exhausted when they cannot use
• Begin to prioritize substance use over hobbies, responsibilities, and relationships

Risky use is a major warning sign that a substance use disorder is developing. The person may recognize that their use is causing harm but feel unable to cut back or stop. (Source)

Positive reinforcement plays a powerful role here. If someone repeatedly feels relief, euphoria, or emotional numbness after using, their brain learns to associate the substance with reward. Over time, they may:

• Need more of the substance to feel the same effect (increasing tolerance)
• Spend more time thinking about, obtaining, and using the substance
• Use to avoid withdrawal symptoms or emotional discomfort rather than to feel “good”

These changes in the brain’s reward system and stress response make it much more likely that use will progress to dependence and addiction. (Source)

In the fourth stage, substance use has progressed to dependence and addiction. At this point, the brain and body have adapted to the presence of the substance, and it becomes extremely difficult to function without it.

Dependence generally involves three interconnected elements:

1. Tolerance – Needing more of the substance over time to achieve the same effect. (Source)
2. Physical dependence – Experiencing withdrawal symptoms (such as sweating, shaking, nausea, anxiety, or insomnia) when cutting back or stopping use. (Source)
3. Psychological dependence – Feeling intense cravings, obsessing about using, or returning to use after attempts to quit.

A person with addiction may:

• Use alcohol or drugs daily or multiple times per day
• Feel unable to cut down or stop, even after serious consequences
• Spend most of their time obtaining, using, or recovering from substances
• Continue using despite health problems, relationship loss, job loss, or legal issues (Source)

In earlier editions of the Diagnostic and Statistical Manual of Mental Disorders (DSM), “substance abuse” and “substance dependence” were separate diagnoses. In the current DSM-5, these are combined into a single diagnosis called “substance use disorder,” which is classified as mild, moderate, or severe based on the number of symptoms present. (Source)

Common characteristics of a substance use disorder in this stage include:

• Ongoing use that leads to major problems at work, school, or home
• Repeated use in hazardous situations, such as driving under the influence
• Increasing tolerance and withdrawal symptoms
• Giving up important social, recreational, or occupational activities because of use
• Continuing to use despite knowing it is causing or worsening physical or mental health problems (Source)

At this point, substance use often feels compulsive and out of control. Many people in active addiction experience a significantly reduced quality of life, along with feelings of shame, hopelessness, or isolation. Even so, recovery is possible. With the right treatment and support, the brain and body can begin to heal, and people can build a fulfilling life in recovery. (Source)

Addiction is recognized by major medical and public health organizations as a chronic, relapsing brain disease—not a moral failing or lack of willpower. (Source)

Long-term substance use changes the way the brain processes reward, decision-making, stress, and self-control. These changes can persist even after a person stops using, which is why cravings and relapse risk can continue for months or years. (Source)

Like other chronic illnesses such as diabetes or heart disease, addiction often involves periods of remission and relapse. A return to use is not a sign that treatment has “failed” but an indication that the treatment plan may need to be adjusted or intensified. (Source)

Viewing addiction as a disease helps reduce stigma and encourages people to seek evidence-based care, including medical treatment, therapy, and long-term recovery support.

Although addiction is progressive and can be life-threatening if left untreated, it is also highly treatable. Many people achieve long-term recovery with the right combination of professional care, support, and lifestyle changes. (Source)

Effective treatment addresses both the symptoms of addiction and the underlying issues that contribute to substance use, such as trauma, mental health conditions, chronic pain, or stress. (Source)

A comprehensive addiction treatment program may include:

• Medical detox – Supervised withdrawal management to help you safely and more comfortably stop using alcohol or drugs, especially substances like alcohol, benzodiazepines, and opioids that can cause serious withdrawal symptoms. (Source)
• Residential or inpatient treatment – 24/7 structured care in a supportive environment, with therapy, education, and medical support.
• Partial hospitalization (PHP) or intensive outpatient (IOP) – Step-down levels of care that provide intensive treatment while allowing you to live at home or in a sober living environment.
• Individual therapy – Evidence-based approaches such as cognitive behavioral therapy (CBT), dialectical behavior therapy (DBT), and trauma-informed therapies to help you understand triggers, build coping skills, and change unhelpful patterns. (Source)
• Group therapy and peer support – Connecting with others who understand what you’re going through can reduce isolation and provide encouragement.
• Family therapy and education – Helping loved ones understand addiction, set healthy boundaries, and support recovery.
• Medication-assisted treatment (MAT) – For certain substance use disorders, medications such as buprenorphine, methadone, or naltrexone can reduce cravings and withdrawal symptoms and improve treatment outcomes. (Source)
• Aftercare and relapse prevention planning – Ongoing support, therapy, and recovery resources to help you maintain progress after formal treatment ends.

Cardinal Recovery offers individualized treatment plans that consider your history, current stage of addiction, mental health needs, and personal goals. Our team focuses on treating the whole person—mind, body, and spirit—so you can build a sustainable life in recovery.

You may benefit from professional help if you or someone you love:

• Cannot imagine life without drugs or alcohol
• Has tried to cut back or quit but keeps returning to use
• Continues to use despite serious harm to health, relationships, or work
• Lies about or hides their substance use
• Avoids friends and family or withdraws from activities they once enjoyed
• Cannot clearly see the impact substances are having on their life

A substance use disorder is a chronic, progressive condition, but with support, people can and do regain control over their lives, health, and well-being. (Source) A high-quality addiction treatment program like Cardinal Recovery can help you identify and heal the root causes of your addiction, develop healthier coping skills, and create a strong foundation for long-term recovery.

Recovery does not end when a treatment program is completed. Long-term support is essential to maintaining sobriety and building a meaningful life in recovery.

Ongoing recovery support may include:

• Outpatient therapy – Continued individual or group counseling to address stress, triggers, and life transitions.
• Peer support groups – Programs such as Alcoholics Anonymous (AA), Narcotics Anonymous (NA), SMART Recovery, and other mutual-help groups provide community and accountability. (Source)
• Family and loved one support – Groups like Al-Anon, Nar-Anon, and family counseling can help loved ones heal and learn how to support recovery in healthy ways. (Source)
• Sober living or recovery housing – Structured, substance-free living environments that support early recovery.
• Wellness and lifestyle changes – Exercise, nutrition, sleep, mindfulness, and stress-management practices that support physical and emotional health.

Understanding the stages of addiction can help you recognize when substance use is becoming dangerous and when to reach out for help. No matter what stage you or your loved one may be in, it is never “too early” or “too late” to seek support.

If you or someone you care about is struggling with alcohol or drug use, Cardinal Recovery is here to help. Our treatment program coordinators can answer your questions, explain your treatment options, and guide you through the next steps toward healing and recovery.