Why do my eating disorder and drinking or substance use feed each other?
Eating disorders and substance use co-occur at high rates because they often do the same job: numbing pain, quieting anxiety, escaping shame, or creating a brief sense of relief and control. Some people also use alcohol or other substances in ways directly tangled with the eating disorder, like blunting hunger or coping after a binge. The combination raises medical risks meaningfully, and treating only one condition usually just shifts the weight onto the other. Integrated care that takes both seriously at the same time is what works.
Two coping strategies, one underlying pain
When clinicians look underneath co-occurring eating disorders and substance use, they usually find shared roots: trauma, anxiety, depression, harsh self-criticism, and emotions that feel unmanageable without help. Both behaviors offer fast, reliable relief, and both extract compounding costs. Research consistently finds elevated substance use across eating disorder diagnoses, including anorexia, bulimia, and binge eating disorder.
The entanglements can be specific. Alcohol lowers the defenses that hold behaviors back, so drinking nights become behavior nights. Some people restrict food to make room for drinking, or use substances to suppress appetite, or drink to survive the shame after a binge. Each loop strengthens the other, which is why we treat this overlap as one story rather than two, as our main page on eating disorders and substance use explains.
Why the combination raises the medical stakes
This part deserves plain honesty. Eating disorders already strain the heart, electrolytes, liver, and gut, and substances land on a body with fewer reserves to absorb the hit. Alcohol on an empty stomach hits harder and faster. Dehydration and electrolyte disruption from purging stack with the effects of drinking. Substances used to suppress appetite deepen the underfueling that drives everything else. None of this is said to frighten you, but it is why medical evaluation matters and why symptoms should never be waved away, a topic covered in our pages on the health effects of eating disorders and physical warning signs not to ignore.
If you notice fainting, chest symptoms, confusion, or blood where it should not be, seek medical care promptly. A doctor who knows about both the eating and the substance use can protect you far better than one who knows about neither.
Why treating one alone so often fails
People frequently try to fix these problems in sequence: quit drinking first, deal with food later, or vice versa. The trouble is that both behaviors were managing the same pain, so removing one without addressing the pain sends the load straight to the other. Clinicians sometimes call this symptom substitution, and it is one of the strongest arguments for integrated treatment.
Secrecy makes it worse. Many people hide their substance use from eating disorder providers, or hide their eating disorder from substance use counselors, fearing judgment or rejection. A treatment plan built on half the picture protects half of you. At Empowered Treatment, questions about substances are a normal, judgment-free part of assessment, because honesty is the raw material of a plan that actually fits.
What integrated support looks like
For many adults, an eating disorder IOP that screens for and works with substance use is the right fit: group and individual therapy address the shared drivers, DBT builds urge-management and emotion-regulation skills that work on both fronts, psychiatric evaluation covers co-occurring depression and anxiety, and trauma-integrated care reaches the roots. When substance use is severe enough to need detox or specialized addiction treatment, the answer is coordination, not choosing one diagnosis over the other, and we help clients sequence care and connect with the right providers.
SAMHSA offers a free national helpline and treatment locator for substance use services. For the eating disorder side, and for care that keeps both in view, Empowered Treatment in Austin is here: learn about what we treat or call (512) 882-4599 for a confidential conversation.
Related questions
Which should I treat first, the eating disorder or the substance use?
Usually both together, in a coordinated way. Because the two share drivers and substitute for each other, strictly sequential treatment often watches one problem shrink while the other grows. The exception is safety: if substance use requires medical detox, that comes first, with eating disorder care woven in as soon as possible. An assessment can map the right order for you.
Will an eating disorder program turn me away because I drink or use?
Substance use is common among people seeking eating disorder care and does not automatically disqualify you. Depending on severity, it is either integrated into your plan or coordinated with specialized addiction care. The worst option is hiding it, because a plan built on partial information cannot protect you fully.
Is using substances to control appetite really that serious?
Yes. Using any substance to suppress hunger or compensate for eating is a significant warning sign that an eating disorder and a substance problem are intertwining, and it carries real medical risk. It deserves a prompt, honest conversation with a professional, and it is exactly the kind of thing treatment teams know how to help with.
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