What Makes OCD and Eating Disorders So Often Co-Occur
Research consistently shows high rates of co-occurrence between OCD and eating disorders, particularly Anorexia Nervosa, and clinicians increasingly recognize that the two conditions can share underlying features: intolerance of uncertainty, perfectionism, a need for symmetry or “just right” experiences, and a reliance on rigid rules to manage anxiety. In some cases, food and body concerns become the primary focus of obsessive thinking. In others, OCD exists somewhat separately but still shapes eating in significant ways, through contamination fears, fears of choking or illness, moral rigidity around “clean” or “safe” foods, or compulsive rituals around eating itself.
Because the two conditions can look so similar on the surface, rigid meal timing, avoidance of certain foods, repetitive behaviors around eating, it takes a dietitian trained to recognize the difference between disordered eating driven by body image and weight concerns versus disordered eating driven by obsessive fears and compulsions, or, most often, an overlap and some combination of both.
Who We Support
Our dietitians work with clients navigating the intersection of OCD and disordered eating, including:
- Eating disorders where OCD symptoms center specifically on food, contamination, or body image
- OCD with co-occurring Anorexia Nervosa, Bulimia Nervosa, Binge Eating Disorder, ARFID, or OSFED
- Contamination fears that limit the variety or preparation of foods a person can tolerate
- Rigid food rules, rituals, or “safe food” lists rooted in obsessive thinking rather than diet culture alone
- Checking, counting, or repeating behaviors connected to eating, calories, or exercise
- Intrusive thoughts about food, body, illness, or harm that drive avoidance or restriction
- Perfectionism and intolerance of uncertainty that show up as rigidity around meals
- Clients already working with a therapist on Exposure and Response Prevention (ERP) who need nutrition support that reinforces, rather than undermines, that work
How We Approach Co-Occurring OCD and Eating Disorder Treatment
Treating co-occurring OCD and an eating disorder requires more nuance than treating either condition alone. A meal plan or food rule that feels stabilizing in one presentation can, unintentionally, feed compulsive behavior in another. Our dietitians take the time to understand the function each food behavior serves: is it managing anxiety, avoiding a feared outcome, or a combination of many reasons, before building a nutrition plan around it.
We work in close collaboration with therapists trained in ERP and other evidence-based OCD treatments, so that nutrition counseling actively supports exposure work rather than accidentally reinforcing avoidance. This might mean helping a client gradually reintroduce a “contaminated” food alongside their therapist’s exposure hierarchy, or helping them tolerate uncertainty around portions and flexibility rather than relying on rigid counting and rules for a false sense of safety. Nutrition rehabilitation and psychological treatment need to move together, and we see ourselves as an essential part of that coordinated care team.
A Trauma-Informed, Weight-Inclusive Approach
As with all of our work, we approach OCD and eating disorder treatment from a weight-inclusive, non-diet framework. We focus on flexibility, tolerance of uncertainty, and a genuinely peaceful relationship with food, recognizing that rigidity of any kind can be a slippery slope for someone with co-occurring OCD.
In-Person & Telehealth Appointments Available
We offer nutrition therapy for co-occurring OCD and eating disorders at multiple locations across the Triangle, including Raleigh, North Raleigh, Cary, Chapel Hill, and Durham, as well as our offices in Charlotte, NC, and Portland, Oregon. Telehealth appointments are available for clients throughout North Carolina, Oregon, and many other states, depending on each state’s dietetic licensing laws. Reach out today to learn more and to get started.
