How is addiction treated? The main models used in evidence-based rehab
There is no single addiction treatment method that works for every person with an addiction. Effective addiction treatment draws on several evidence-based models, combining them in ways that address the physical, psychological, and social dimensions of the condition.
Understanding these models helps patients and families make more informed care decisions and understand why a structured, multi-disciplinary approach produces better outcomes than any single therapy in isolation.
This article outlines the main treatment models used at Houghton House and in reputable rehabilitation programmes across South Africa.
The medical model
The medical model treats addiction as a chronic brain disorder, rather than as a character flaw or a failure of willpower. This treatment model recognises that sustained substance use changes brain chemistry in measurable ways, affecting the reward system, impulse control, and stress response. These changes can persist long after substance use stops. This is why addiction carries a high risk of relapse and requires ongoing management.
In practice, the medical model underpins the detox phase of treatment. Medically supervised detoxification manages withdrawal safely, using clinical protocols to minimise discomfort and risk. For certain substances, including alcohol, benzodiazepines, and opioids, withdrawal can be medically dangerous, and professional supervision is essential.
A significant legislative development shaped how the medical model applies to South African patients. Before 2001, South African medical aids would only fund addiction treatment where a co-occurring diagnosis like depression was present. In effect, treatment for substance use disorder was covered under the mental health benefit, with the addiction treatment quietly included alongside it.
In 2001, treatment for substance use disorders became a Prescribed Minimum Benefit (PMB) in South Africa, requiring all registered medical aids to fund treatment for substance addiction — even in the absence of a mental health diagnosis.
For patients weighing up treatment today, this means medical aid cover for addiction treatment is a legal entitlement, not a discretionary benefit. It also means dual diagnosis patients can claim treatment costs from medical aid under two different PMBs — under certain conditions. This change has helped many people in recovery unlock access to additional treatment they would not have been able to afford otherwise.
At Houghton House, medical management extends beyond detox. On-site psychiatric care ensures that co-occurring mental health conditions are identified and treated as part of the recovery process. And as a registered private psychiatric hospital, the facility meets the clinical requirements to claim from medical aid under both PMBs — substance use disorder and psychiatric benefits.
The Minnesota Model
Developed in the 1950s, the Minnesota model combines the principles of Alcoholics Anonymous with professional clinical treatment, and it forms the foundation of most residential rehabilitation programmes today.
The Minnesota Model is the most widely used framework for addiction treatment both in South Africa and internationally. Its origins explain why.
In the 1950s, psychiatric hospitals in the United States were admitting people with alcohol addiction, detoxing them, and discharging them, only to see the same patients return months later. The cycle repeated indefinitely and was widely considered a lost cause.
When clinicians invited AA members into these facilities, outcomes changed. The combination of clinical expertise and the lived experience of people in recovery produced results that neither could achieve working separately. From that observation, the Minnesota model was built.
When Houghton House opened in 1995, addiction treatment in South Africa offered two main options: a medical or psychiatric model that admitted patients as mentally ill, or faith-based programmes that were well-intentioned but not grounded in clinical evidence.
The Minnesota model was a third way, and there was nothing comparable in the South African private treatment sector at the time. The Houghton House facility was founded specifically to bring this approach to South African patients.
Key features of the Minnesota model include:
- Treating addiction as a primary, chronic, and progressive disease
- A structured inpatient or residential programme, typically 28 days or longer
- Integration of the 12-step framework into clinical therapy
- A multidisciplinary team approach involving counsellors, therapists, and medical staff
- Abstinence as the goal of treatment
- Family involvement as a core component of recovery
The model recognises that addiction affects the whole person and requires treatment across physical, emotional, psychological, and spiritual dimensions.
The 12-step programme
The 12-step programme, originating with Alcoholics Anonymous, is one of the most widely studied and replicated recovery frameworks in the world. It provides a structured, peer-supported pathway to abstinence built on personal accountability, community, and specific guiding principles.
At Houghton House, we’ve integrated 12-step work directly into the therapeutic programme rather than treating it as a separate activity. Patients work through the steps with the support of therapists and peers, and are introduced to local support groups as part of their transition to aftercare. This connection to a broader recovery community has been shown to significantly improve long-term outcomes.
Cognitive behavioural therapy (CBT) and dialectical behaviour therapy (DBT)
Cognitive behavioural therapy (CBT) is one of the most well-evidenced psychological treatments for addiction. It works by helping patients identify and challenge the thought patterns and beliefs that drive addictive behaviour, and to develop practical coping skills for high-risk situations.
Dialectical behaviour therapy (DBT) builds on CBT with a stronger emphasis on emotional regulation, distress tolerance, and interpersonal effectiveness. It is particularly useful for patients who struggle with intense or unstable emotions, and for those with co-occurring conditions such as borderline personality disorder or a history of trauma.
We offer both of these therapies through individual and group sessions at Houghton House. This forms a core component of our daily therapeutic programme.
The bio-psycho-social model
The bio-psycho-social model recognises that addiction is shaped by biological factors (genetics, brain chemistry), psychological factors (trauma, mental health, beliefs), and social factors (relationships, environment, culture). Effective treatment needs to address all three.
This is why a comprehensive assessment at the start of treatment is so important. Understanding a patient’s full history, including any trauma, family dynamics, mental health background, and social circumstances, allows the treatment team to tailor the programme to the individual rather than applying a one-size-fits-all approach.
At Houghton House, the bio-psycho-social model informs everything from initial assessment through to discharge planning and aftercare.
Dual diagnosis treatment
A significant proportion of people presenting with addiction also live with a co-occurring mental health condition: depression, anxiety, PTSD, bipolar disorder, or ADHD, among others. When both conditions are present, they are known as a dual diagnosis. The clinical team at Houghton House estimates this applies to close to 90% of patients, a figure consistent with the broader literature on dual diagnosis.
Treating addiction without addressing the underlying mental health condition is one of the most common reasons for relapse. Equally, treating mental health without addressing substance use rarely leads to lasting recovery. The two need to be treated simultaneously by a team with expertise in both areas.
Houghton House recognised this reality early, long before dual diagnosis became standard terminology in the sector. For years, the facility delivered treatment that went well beyond what a standard rehabilitation licence covered or medical aids would fund: employing psychiatrists, psychologists, and qualified clinical staff, and treating co-occurring conditions as part of the primary programme. But for years, medical aids reimbursed the facility at a rate equivalent to what they reimbursed other rehabs with a fraction of that clinical capacity.
In 2023, Houghton House was formally registered as a private psychiatric hospital. This registration provided clinical recognition and a funding structure that matches the level of care the facility has provided in practice for decades. And for patients, it means they can now claim from medical aid for psychiatric services as well as addiction treatment, where co-occurring conditions qualify under psychiatric Prescribed Minimum Benefits.
Houghton House’s onsite psychiatric care means that dual diagnosis patients receive integrated treatment from intake forward, rather than being referred elsewhere or having one condition deprioritised.
The three phases of treatment
Regardless of which therapeutic models are used, effective residential rehabilitation typically moves through three progressive phases:
Phase 1: Stabilisation. The focus is on physical detoxification, breaking denial, and establishing safety. This phase involves close medical monitoring and an introduction to the therapeutic community.
Phase 2: Core treatment. The deeper therapeutic work takes place here, covering trauma processing, coping skills development, 12- step work, and building insight into patterns of addictive behaviour. CBT, DBT, group therapy, and educational sessions are central to this phase.
Phase 3: Reintegration. As treatment nears completion, the focus shifts to preparing the patient for life after rehab. This includes relapse prevention planning, family reintegration, and linking the patient to aftercare structures such as outpatient sessions, support groups, or a halfway house.
Aftercare and relapse prevention
Recovery does not end at discharge. Part of the reason the early months matter so much comes down to brain chemistry. Sustained substance use alters neural pathways in ways that take time to reverse.
The brain’s reward circuitry and capacity for clear decision-making aren’t fully restored until around 90 days after the last use. The 12-step fellowship’s longstanding practice of attending 90 meetings in 90 days reflected this understanding long before neuroscience was able to explain it.
Clinically, the implication is straightforward: Aftercare isn’t optional supplementation to residential treatment. For most people, getting to 90 days — and then to one year — is where the real work of recovery happens.
Research consistently shows that patients who engage with aftercare structures have significantly better long-term outcomes than those who do not. Aftercare bridges the gap between the protected environment of residential treatment and the demands of everyday life.
Houghton House offers several aftercare options:
- Evening outpatient aftercare sessions
- Halfway house transitional living
- Ongoing access to support groups
- Relapse prevention programmes
Relapse prevention is not a separate model so much as a skill set developed throughout treatment. Patients learn to identify their personal triggers, develop response plans, and build the social support structures that make sustained recovery possible.
How Houghton House integrates these models
No single addiction treatment model is sufficient on its own. At Houghton House, treatment is built around a structured daily programme that draws on all of the above approaches, adapted to the individual’s clinical and psychological profile.
A typical day includes 12-step work, individual and group therapy, CBT and DBT sessions, educational lectures, mindfulness and meditation, exercise and biokinetics, and journaling. Psychiatric care and medical management run alongside the therapeutic programme for patients who need it.
The goal is not only sobriety but sustainable recovery, equipping patients with the insight, skills, and support structures to maintain their wellbeing long after leaving treatment.
Frequently asked questions
Which treatment model is most effective for addiction?
Research shows that no single model works for everyone. The strongest outcomes are associated with integrated, multi-disciplinary programmes that combine medical management, evidence-based therapy (CBT, DBT), the 12-step framework, and structured aftercare. This is the approach used at Houghton House.
What is the difference between CBT and DBT in addiction treatment?
CBT focuses on identifying and changing thought patterns that drive addictive behaviour. DBT adds skills for emotional regulation and distress tolerance, and is particularly useful for patients with trauma histories or emotional dysregulation. We use both at Houghton House.
What is dual diagnosis, and why does it matter in rehab?
Dual diagnosis refers to the presence of both an addiction and a co-occurring mental health condition. Treating both simultaneously is essential, as addressing only one significantly increases the risk of relapse. Houghton House has on-site psychiatric care to manage dual diagnosis from the start of treatment.
How long does addiction treatment take?
The minimum recommended duration for residential treatment is 28 days, though many patients benefit from longer stays. The three phases of treatment (stabilisation, core therapy, and reintegration) each require adequate time to be effective.
Speak to our team about treatment
Choosing the right rehabilitation centre is one of the most important decisions a person or family will make. Houghton House is one of the few addiction treatment facilities in South Africa that holds full psychiatric hospital licensing, with on-site medical staff available around the clock. This means treatment is clinically supervised at every stage, and patients can claim from medical aid for a broader range of services than a standard rehabilitation centre can provide.
If you are looking for treatment for yourself or a loved one, our team is available for a confidential conversation. We can help you understand your options, clarify what your medical aid covers, and guide you through the admission process at your own pace.
Call us at +27 11 787 9142 or visit our contact page to send us a message.
