What gets reported, what gets measured, and who treats what
Two kinds of information run through every session, they frequently disagree with each other, and understanding why explains most of what is confusing about eating disorder treatment — including why the food part is the hardest part.
Two kinds of information
Subjective is what you report. What you ate, how full you felt, how the week went, what hurt, what you were afraid of, how your body seemed to you. It is your experience, in your words, and it is the only source for most of it — nobody else was inside your Tuesday.
Objective is what is measured or observed. Weight and body composition, vital signs, orthostatic changes, laboratory values, growth data, and what a physical exam shows about muscle, fat stores, skin, hair and nails.
Every clinical note is built from both. Neither one alone is enough to work from.
Why they differ, and why you are believed
In most of medicine the two roughly track each other. In eating disorders they often do not, and the gap between them can be wide.
Someone can report eating adequately, accurately describing every meal, while measured weight falls. Someone can feel physically enormous while every objective marker says the opposite. Someone can feel completely well while their heart rate says otherwise.
None of that is dishonesty. Two things are happening, both of them physiological.
- Interoception is disrupted. Interoception is the internal sense that tells you what is happening in your body — hunger, fullness, thirst, temperature, heart rate, the need to rest. Sustained inadequate intake degrades those signals. Fullness arrives after a few bites. Hunger goes quiet, or arrives as anxiety or nausea instead. The reporting instrument itself has been altered by the illness.
- Perception of the body is distorted, and distortion is not something a person can see past by trying. It is a symptom, not an opinion.
So the divergence is treated as data, not as a credibility problem. When what you report and what is measured pull apart, that gap is clinically useful — it tells us something about where interoception is, how far restoration has come, and what to expect next. It is written down as a finding about the illness. It is never written down as a finding about you.
One measure that is not weight
Worth knowing about, because it changes what the scale means.
Grip strength is measured at sessions, using a hand dynamometer. You squeeze it; that is the whole procedure. It sounds like an odd thing for a dietitian to care about until you know what it is for.
It measures muscle function rather than body mass. Weight going up and muscle being rebuilt are two different events, and they do not always happen together — grip strength is how we tell which one is actually occurring.
And unlike weight, it is not thrown off by fluid shifts. In the weeks when the scale is least readable — early refeeding, after purging stops, when swelling arrives — grip strength stays interpretable. When the two disagree, that disagreement is itself useful information rather than a problem.
The Academy of Nutrition and Dietetics and ASPEN both name it specifically as a measure of physical function. It is not widely done in outpatient nutrition care, and it should be.
This is why measurement exists here at all. Not to check up on anyone. Because an illness that alters the instrument you would use to report on yourself requires a second source of information — and having that second source is what lets your own report be received without suspicion.
Who treats what
Eating disorder care is team care because no single discipline holds all of it. The boundaries are real and they are kept clean.
- PhysicianMedical diagnosis, medical stability, laboratory interpretation, prescribing, and clearance decisions. Anything about whether your body is safe belongs here, and it is theirs to decide.
- PsychiatristPsychiatric diagnosis and medication management for mood, anxiety, sleep and co-occurring conditions.
- TherapistThe meaning of it. Emotion, trauma, identity, body image, relationships, and the cognitive and behavioral work of change. This is where recovery is consolidated.
- Registered dietitianNutritional status, adequacy of intake, the nutrition prescription itself, physical nutrition assessment, refeeding safety, nutrient repletion, GI tolerance, and the practical structure of eating. Nutrition diagnoses only — medical and psychiatric diagnosis sit with the providers above.
- Caregivers and support peopleImplementation and presence. Meals, structure, company, and holding the plan when it is hard. Coached directly rather than left to improvise.
Overlap is coordinated deliberately, so nobody is pushing from one direction while something is being worked through from another. What one discipline finds gets routed to whoever owns the decision, the same week.
Why the food part asks the most of you
People often say this, and they are not imagining it. There are structural reasons, and none of them are about willpower.
- It is the only part that happens several times a day, every dayTherapy is an hour a week. Eating is six occasions a day, indefinitely, including on the days when everything else has gone wrong. Nothing else in treatment asks for that frequency.
- The intervention is the feared thing itselfIn most treatment you talk about the difficult thing. Here you do the difficult thing, repeatedly, and then talk about it. There is no version of this work that routes around food.
- It is the most measurable domainWeight, intake, laboratory values — this part of treatment produces numbers. That makes progress visible, and it also makes it the place where the illness works hardest to shape what gets said.
- It produces physical discomfort that feels like evidenceFullness, bloating, GI symptoms, fluid shifts. The body’s response to being fed again is genuinely uncomfortable, and it arrives feeling like proof that the plan is wrong. It is usually proof the plan is working. That is a hard thing to sit with.
- Distress often rises before it fallsAnxiety frequently increases as eating improves, which is the opposite of what anyone expects from a treatment that is working.
- There is nowhere private to do itSomething can be held back in a therapy hour. Eating happens in kitchens, at tables, in restaurants, in front of families and colleagues. It is the most public part of a very private illness.
How that is supported
- You are told what is coming before it arrives — the fullness, the fluid shifts, the rise in distress, roughly when and for roughly how long. Almost everything about this is more tolerable when it is expected.
- Discomfort is treated as clinical information, not as something to push through in silence. GI symptoms are worked into the plan rather than handed to someone else.
- The pace is yours to be part of, and what does not fit your life is information the plan needs.
- Nothing about the measurement is used against you. You may choose not to see the number, at any point, without explanation.
- The frequency is the point, so the plan is built to be liveable — not ideal. A plan you can run on an ordinary Tuesday beats a better plan you cannot.
