The research team, led by Anna Preece, a PhD student at Bournemouth University, conducted a scoping review of 44 previous studies to understand how common this overlap is and what psychological mechanisms drive it. Scoping reviews of this kind are a valuable tool in health research because they map the breadth of existing evidence across many separate studies, allowing researchers to identify patterns that no single investigation could reveal on its own. By synthesising findings from dozens of clinical and community samples, the team was able to build a picture of how frequently eating difficulties appear among people with alcohol problems, and to explore the shared roots of the two conditions.

What emerged from the analysis was a consistent set of underlying difficulties that appear to fuel both conditions. The researchers found that disordered eating and problematic alcohol use are often rooted in the same psychological vulnerabilities, particularly difficulties regulating emotions, low self-esteem, and impulsive behaviour. This shared foundation helps explain why the two problems so frequently travel together. Someone who struggles to tolerate distress may reach for alcohol in one moment and restrict food, binge, or purge in another, with each behaviour serving a similar function of managing overwhelming feelings. Impulsivity, meanwhile, is a well-documented risk factor for both substance misuse and certain eating disorder presentations, creating a further point of convergence.

Among the eating disorders identified across the studies reviewed, bulimia nervosa was the most frequently reported. This is a significant detail, because bulimia nervosa is characterised by cycles of binge eating followed by compensatory behaviours such as vomiting, laxative use, or fasting, and it is strongly associated with emotional dysregulation and impulsivity. Its prominence in this literature reinforces the idea that the same psychological processes underpin both conditions. It also carries clinical implications, since bulimia can cause serious physical harm, including electrolyte imbalances and cardiac complications, which may be compounded by the physiological effects of heavy alcohol use on the liver, digestive system, and nutritional status.

The review’s central criticism is directed at the architecture of healthcare itself. Support for eating disorders and support for alcohol recovery are separated in healthcare systems, typically housed in different specialist services with different referral routes, assessment tools, and treatment philosophies. A patient who presents to an alcohol service will usually be assessed and treated for their drinking, while their relationship with food goes unexamined. Conversely, someone who reaches an eating disorder service may not be asked in detail about their alcohol use. Preece argued that treating the two as distinct problems does not reflect the reality of many people’s lives, noting that healthcare systems have well established recovery programmes for alcohol problems and disordered eating, but that many people with alcohol problems also struggle with overeating, restricting what they eat, or using food to cope with their emotions.

The consequences of missing this link can be serious. The researchers warn that failure to identify the connection earlier can make it harder for a patient to recover and can increase the risk of leaving treatment early. Disengagement from treatment is a persistent challenge in addiction care, and unaddressed comorbid conditions are a known contributor. If a person completes an alcohol programme while their disordered eating remains untouched, the coping mechanisms that drove both behaviours may simply resurface in the surviving condition, undermining the durability of recovery. Conversely, an untreated alcohol problem can sabotage progress in eating disorder treatment, since intoxication impairs judgement, disrupts eating patterns, and damages the therapeutic work of rebuilding a healthy relationship with food.

The findings also raise pointed questions about treatment models that focus solely on alcohol abstinence without considering a person’s relationship with food. Preece cautioned that abstinence-focused approaches could inadvertently reinforce someone’s restrictive eating habits, and she called for more research into integrated treatment for both conditions. This concern highlights a subtle but important clinical risk. Some people in early recovery report substituting sugar or other foods for alcohol, and while improved nutrition is generally welcome, an unexamined shift toward rigid restriction, bingeing, or compensatory behaviour can entrench a new disorder in the space left by the old one. Without routine screening for eating behaviours, clinicians cannot distinguish a healthy dietary improvement from the emergence of a harmful pattern.

The review complements a parallel project led by Preece’s PhD supervisor, Dr Chloe Casey, a Lecturer in Nutrition and Behaviour at Bournemouth University, which explores how support with healthy eating can help people recovering from alcohol addiction. Working with the recovery charity WithYou and the Friendly Food Club, Dr Casey has run cooking courses for people with alcohol problems in the Bournemouth area. Early findings from that project have been encouraging, with participants reporting that the physical and mental health benefits of a healthy diet are supporting their recovery. Dr Casey explained that people’s relationships with food and alcohol are closely connected and that both can become ways of coping with life’s stresses, so when people seek recovery support they may need help with their relationship with food as well. She described how seeing this pattern within her own family inspired her to explore how healthy eating can be better supported alongside alcohol recovery.

While the authors acknowledge that more research is needed into joint treatment plans, they recommend a practical first step: alcohol support services should ask people about their eating behaviours early in the recovery process. Screening does not require new specialist infrastructure, only a change in the questions that are asked at assessment and follow-up. As Preece concluded, healthcare services are organised around diagnoses and specialties, but patients are not, and if alcohol services ask about alcohol but not eating, they may be missing a significant part of the problem. The study, published as a scoping review in the Journal of Eating Disorders, adds to a growing body of evidence that comorbidity is the norm rather than the exception in mental health and addiction care, and that services designed around single diagnoses will inevitably leave part of each patient’s struggle unaddressed until assessment practices catch up with the reality of lived experience.

Subject of Research: Comorbidity of disordered eating behaviour and alcohol use disorder

Article Title: Health services may be missing the link between alcohol problems and eating disorders, study suggests

Article References: Health services may be missing the link between alcohol problems and eating disorders, study suggests. (n.d.). Original publication

Image Credits: AI Generated

DOI: Not provided

Keywords: eating disorders, alcohol use disorder, comorbidity, bulimia nervosa, scoping review, Bournemouth University, Journal of Eating Disorders, alcohol recovery, mental health services, emotional regulation, nutrition, screening