Most people, whether addiction has touched their life or not, have come across the idea of cross addiction, even if they’ve never heard the term. It’s the notion that someone in recovery simply trades one addiction for another.
There’s truth in it; cross addiction is a real risk factor in recovery, but the full picture is more complicated than the phrase suggests. A lot goes on beneath the surface that’s worth understanding.
This page covers what cross addiction actually is, why it happens, the warning signs to look out for, and how to reduce the risk of it taking hold in recovery.
What is Cross Addiction?
Cross addiction is when someone develops a new addiction to a different substance or behaviour, either while still battling an original addiction or after recovering from one.
The idea behind it is simple enough, in that addiction isn’t really about the substance itself, but rather, the underlying process in the brain that fuels the compulsive behaviour. This mean that if you remove the original substance without addressing how it got to that point, a new outlet will be found and the cycle continues.
Before we go further on this topic, it’s worth noting that there’s no universally accepted word for this, so if you’re researching this topic and come across the following names, they’re used more or less interchangeably:
Addiction transfer
Substitute addiction
Addition replacement
Cross dependency
One related term is worth pulling out from that list, though, because it means something more specific. Addiction Interaction Disorder describes the idea that when someone has more than one addiction, those addictions interact, feed into each other, and reinforce one another.1 It’s a more clinical and precise idea than the general notion of cross addiction, and it’s a useful one to know if you’re trying to understand how multiple addictions can tangle together.
It’s also worth being clear about what cross addiction is not, in a formal sense. It isn’t a diagnosis you’ll find in the medical manuals doctors use, like the DSM-5 or the ICD-11. Instead, it’s more of a descriptive term used in clinical and recovery settings. This can help a patient make more sense of what they’re dealing with, and sometimes putting a name on whatever it is you’re battling can make the process feel a touch more directive.
Cross Addiction Vs Dual Diagnosis
These two terms consistently get muddled, but it’s easy to see why. Our job is to make sure you fully understand them.
In the addiction recovery field, dual diagnosis, also called co-occurring disorders, is when an addiction exists alongside a mental health condition.
For example, a person dealing with a cocaine addiction could also be experiencing depression or anxiety.
Cross addiction is different, in that it’s two or more addictions, whether they happen one after the other or at the same time. No mental health diagnosis needs to be made for this to apply to a person’s situation.
It’s understandable why these two get confused, as both involve more than one problem, but they describe two very different situations.
What Causes Cross Addiction?
Addiction is a complex subject, meaning that there’s never going to be a single, clear explanation why someone develops a cross addiction. That said, there are a few well-known reasons that could cause someone to fall into a cross-addiction, which we explore below.
The Brain's Reward System
One of the most fundamental reasons sits on a neurological level. Addiction centres on the brain’s dopamine reward centre and reward and motivation circuitry, fuelled largely by dopamine rather than on any one substance. The science here shows that repeated addictive behaviour sensitises this system, and addictive substances as well as compulsive behaviours can trigger the same reward-learning process, which makes it almost fixate on the ‘wanting’ part of a reward and the cues around it.
So, the theory is that if this circuitry isn’t tied to a specific substance, the compulsive wanting it generates can latch onto something new, so the drug reinforces continued use even when the original substance is replaced by a different outlet.
Unresolved Root Causes
Aside from brain chemistry, there’s also another very important aspect, which lies within the psychological reasoning behind cross addiction.
To understand this, we first have to understand that no one sets out to form an addiction, nor do they become addicted for no apparent reason. In a lot of cases, things like trauma, emotional dysregulation, mental health conditions, unresolved mental health issues, and poor coping mechanisms fuel addictive behaviour as a way to manage emotional discomfort all fuel an addiction.
If someone stops using a substance or engaging in harmful behavioural activities, but never addresses the underlying issues behind it, cross addiction can occur because the original drivers are still untreated.
A Shared Vulnerability
Research on families, especially twin studies, suggests that inherited traits are one of several risk factors for addiction. Importantly, what’s passed down isn’t a vulnerability to a particular substance, but a broader susceptibility to addiction itself.
This means that if a parent forms a heroin addiction, it doesn’t mean that their children are guaranteed to form a heroin addiction themselves, but it does raise the risk for addiction to other things in general.
This could help explain why someone with a previous addiction, or who is currently struggling with one, may be more prone to developing another.
The Early Recovery Window
This is a topic that doesn’t get discussed nearly as much as it should in the general population. Timing is huge within addiction recovery, and the early months are widely recognised as a period of raised vulnerability, which is when cross addiction can occur most easily.
Cravings don’t up and leave the moment someone stops, and research shows cue-triggered cravings can grow strong over the first weeks and months.5 That leaves active addicts and people who are newly sober especially vulnerable to shifting from one substance or behaviour to another. It could be theorized that during this window, a person is at the most vulnerable, and possibly even most reward-hungry, meaning cross addiction can happen if another rewarding substance or behaviour appears.
Common Cross Addictions
Cross addiction usually follows one of two routes, which we explore further below
Substance to Substance
The first route is a move from one substance to another. Someone recovering from alcohol addiction might lean on prescription drugs to get through the withdrawal process, or someone coming off opioids might start drinking heavily to promote relaxation. This can happen when substance use keeps serving the same emotional or physical need, and patterns of substance abuse simply shift rather than stop. Because alcohol is legal and available, it features heavily in these patterns.
These transfers can run in almost any direction. A person leaving one drug behind can find themselves drawn to another that scratches a similar itch, whether that’s the sedation of alcohol or the escape of cannabis. For example, stimulant users sometimes switch to nicotine or caffeine in recovery. Trying other drugs because they seem safer can still lead to other drug addiction. The common thread is that the new substance ends up doing the same job the old one did.
Substance to Behaviour
The second route is a move from a substance to a behaviour.
Here, someone might quit a substance and find its place taken by gambling, food, sex, shopping or even exercise, as well as other compulsive behaviours more broadly. These compulsive behaviours tap into the same reward chemistry the substance once triggered, which is what makes them so easy to lean on.
Part of the danger is that a behaviour can feel far less harmful than a drug, so it slips under the radar. Spending too much or overtraining rarely set off the same alarm bells, which means a behavioural cross-addiction can take hold before anyone thinks to question it. Gambling addiction can be just as serious even when no substance is involved. Research also shows that 22.5% of individuals with a gambling disorder also had a substance use disorder.
A Word of Honesty
Recovery culture can sometimes overstate cross addictions and the idea that people routinely swap one addiction for another. The process is simply too complicated to routinely come to the same conclusion for every person.
A large study found that people who recovered from one substance addiction were actually less likely to develop a new one, not more.6
So, while cross addiction is certainly real and absolutely a risk factor, it isn’t a certainty, and it isn’t a trap that everyone falls into. Understanding this can help you realise your risk, but at the same time, understand that your outcome is not predetermined by science, numbers, data or research.
Warning Signs of Cross Addiction
Because a cross addiction isn’t a formal diagnosis, there’s no official checklist to look out for. That said, the recognised features of addiction in general apply just as well to new addictive behaviours, whether they involve a substance or behaviour.
If you’re considering recovery, in recovery now or supporting someone who is, these are the signs worth watching for in any new activity or substance, including patterns people may already recognise from alcohol or drug addiction.
It starts taking up more and more time in your life
It’s being used to change how you feel
It takes more of it to get the same effect
Stopping, or even cutting back, brings distress and withdrawal symptoms
It’s starting to interfere with daily life, causing negative consequences like work problems or damaged relationships
There’s secrecy around it
If any of this feels familiar
Noticing a few of these signs doesn’t mean something is wrong, and it certainly isn’t a diagnosis. But if a new habit has started to feel like it’s taking up more space than you’d like, in yourself or in someone close to you, that’s worth talking through with someone who understands how addiction works.
A conversation costs nothing and commits you to nothing, and addiction is a disease, not a moral failing. Sometimes it’s simply the clearest way to make sense of what you’re noticing. Contact Rehab Today for that conversation.
How Common is Cross Addiction?
In an ideal world, there would be a tidy statistic that would allow you to see how common a cross addiction is, but in reality, there isn’t.
There’s no reliable figure for how common cross addiction is in the UK and this is because it isn’t a condition that health services formally count. They may cover addictions, but not cross addictions specifically.
That said, we can still look at related data that gives some sense of the wider picture.
In terms of one behavioural addiction, gambling, the Gambling Survey for Great Britain found that around 2.7% of adults.) scored at the level associated with problem gambling.7
Approximately 20.1 million people had a substance use disorder in 2019.
On drug dependence, the Adult Psychiatric Morbidity Survey found signs of dependence on illicit drugs had risen to 6.7% of working-age adults, which was up from 3.8% a decade earlier.
If we keep in mind that cross addiction is a risk factor for those currently with or who previously dealt with an addiction, these kinds of stats can still help show the wider overlap around drug and alcohol dependence. But, truthfully, how many of those percentages listed are actually dealing with a cross addiction is unknown.
How is a Cross Addiction Treated?
Because cross addiction isn’t a single diagnosis, to treat cross addiction effectively, cross addiction treatment needs to target the specific addictions involved, along with the shared drivers underneath them.
Talking therapies are central in addiction counselling, with approaches like cognitive behavioural therapy helping people to understand their triggers and build new ways of coping through healthier coping strategies.
Where trauma sits underneath, trauma-focused approaches address the root rather than just the surface.
Where a mental health condition is part of the picture, treating both the addiction and the mental health side together, rather than separately, gives the best chance of lasting recovery. In fact, UK clinical guidance leans firmly towards this joined-up approach rather than passing people between services.
For opioid and heroin addictions, medication assisted treatments can help manage withdrawal symptoms, and this can be especially relevant in heroin addictions.
In the UK, help is available through NHS and local-authority drug and alcohol services, through residential rehab for those who need it, and through mutual aid groups. A structured treatment program in professional rehab can provide support, accountability, and proven effective treatment modalities during recovery. Mutual aid can also include twelve step programs, which can support different types of cross addiction.
Aftercare also matters enormously here, because ongoing support through that vulnerable early period is one of the best defences against a new addiction taking hold.
Frequently Asked Questions
Is cross addiction a real condition?
It’s a real and widely recognised pattern, but not a formal diagnosis. You won’t find it in the manuals doctors diagnose from, like the DSM-5. Instead, clinicians diagnose each individual addiction a person has and treat the shared causes underneath them.
Is cross addiction the same as relapse?
No. Relapse means returning to your original addiction and cross addiction means developing a new one, to a different substance or behaviour. The two can overlap but they describe different things.
Can you be addicted to a behaviour rather than a substance?
Yes. Gambling and gaming are both formally recognised as behavioural addictions, while others, such as shopping or sex addiction, are widely discussed in recovery settings in the same terms but aren’t yet officially classified. A sex addict may also need support tailored to that specific pattern.
How do you avoid cross addiction in early recovery?
To prevent cross addiction, awareness in early recovery is the biggest protection. Address the root causes in therapy rather than only removing the substance, watch for new habits taking on too much importance, and lean on support and healthy relationships as part of your recovery protection. Be cautious with any prescribed medication that carries its own dependence risk, as pain medication, prescription medications, addictive medications, and related drugs can all become risks if they are not carefully managed. Where possible, avoid taking addictive medications and seek safer pain relief options for chronic pain with medical guidance.
What are the Next Steps?
If you’ve read this far because you’re worried about a pattern in your own recovery, or someone else’s, the most useful thing you can do is talk to someone who can help you understand it properly.
You don’t need to have it all worked out first, and many people get in touch simply to talk things through, find out what their options are, and start rebuilding life in a way that helps them maintain meaningful relationships, not just stop the addiction.
At PCP, that starting point is a confidential assessment. It helps build a clearer picture of your situation, including any new patterns that have emerged in recovery, and from there the right kind of support can be discussed, including help with alcohol dependence and other addictive behaviours when they overlap.
PCP provides drug and alcohol detox and rehabilitation within a safe, CQC-registered facility in Luton, supporting people from across the UK. If you’d like to understand what treatment looks like and whether it fits your situation, contact us today. There’s no obligation to make a decision on the call, and recovery can still include fun and rebuilding your life without returning to substances.
