Eating Disorder Signs in Primary Care: What Patients Present With

What your patient came in for wasn’t the eating disorder

A patient comes to you with reflux that won’t settle. Another with low mood and poor sleep. A third because her periods have become irregular. A fourth is a competitive athlete with a BMI of 30, and nothing about him suggests restriction.

None of them came to talk about food. One of them might be there for exactly that reason.

They are already in the room

A study followed 99 young people who were newly diagnosed with an eating disorder and looked back at the year before that diagnosis. Almost nine in ten — 87.6% — had already attended health services during that year, averaging 3.59 consultations. What brought them in was unspecific digestive complaints (29.8%), psychological symptoms (22.8%), and gynaecological issues (19.3%). Weight change accounted for only 11.9%.

The same pattern shows up in England on a much larger scale. In a cohort of 46,473 adults, those who eventually reached specialist eating disorder services had been consulting their GP at roughly double the background rate for the two years beforehand.

These aren’t people who failed to seek help. They sought it repeatedly. The eating disorder simply wasn’t what they named at the desk, and it wasn’t what got recorded.

Why the signal is so easy to miss

A recent American case series makes the mechanism uncomfortably clear. Four patients, all in outpatient psychiatry, all with an eating disorder that had gone unrecognised for years — eight, fifteen, sixteen. In every single case, the eating disorder was not the reason for clinical contact.

They presented with anxiety, with trauma, with alcohol use, with the ordinary chaos of an unstable home. One was a wrestler whose weight put him nowhere near anyone’s threshold of concern. One had disordered eating that had nothing to do with how she felt about her body at all.

Four patients is a small number and it proves nothing on its own. But it describes something most clinicians recognise once it’s named: the disorder arrives dressed as something else.

This is a training gap, not a competence gap

It would be easy to read the above as a failure of attention. It isn’t.

When researchers interviewed fourteen UK GPs with experience of managing eating disorders, five of them had received no formal training in eating disorders at all.

Most of the rest described what they’d had as minimal. They spoke about low confidence, and they were clear about where it came from — these presentations are rare enough in any single practice that no pattern ever builds. As one put it: “Fairly unconfident I would say because they come round quite rarely.”

They also named something structural. Referral criteria built around BMI thresholds were, in their experience, actively excluding patients who would have benefited from early intervention.

Nobody taught most of us this. That is a different problem from not caring, and it has a different solution.

A question worth sitting with

Not a checklist. Just one thing to notice this week:

When a patient describes their eating — what they eat, when, how they feel about it — do you ask because you’ve built it into how you take a history? Or do you ask only when something else has already made you suspicious?

There’s no wrong answer. Most of us learned to ask about food only in the context of a physical complaint, because that’s how we were taught. But the difference between those two habits is roughly the difference between finding these patients and not.

You don’t have to be a specialist to become eating disorder-informed.

You don’t need to treat these conditions to recognise them, and recognising them earlier changes outcomes — the same research that measures the delay also finds that a shorter time to treatment is associated with a greater likelihood of remission.

Over the next few weeks we’ll be looking at what those early signals actually look like, including the ones that tend to get praised rather than flagged. Eating Disorders: What Every Professional Needs to Know is a one-day training for clinicians, therapists, dietitians and allied health professionals who don't work in eating disorders and don't intend to — but who want to recognise one when it's in front of them.

Frequently Asked Questions

Do patients with an eating disorder usually present with weight loss?

No. In a study of 99 newly diagnosed patients, weight change accounted for only 11.9% of the reasons for consultation in the year before diagnosis. The most common presentations were unspecific digestive complaints (29.8%), psychological symptoms (22.8%) and gynaecological issues (19.3%).

Can someone have an eating disorder at a normal or higher weight?

Yes. Restrictive eating disorders occur at every body size. A published case series describes a competitive athlete with a BMI of 30.6 whose restrictive eating went unrecognised, and research shows both clinicians and members of the public are less likely to diagnose atypical anorexia nervosa — and less confident when they do — than typical anorexia nervosa.

Why are eating disorders so often missed in general practice?

Largely because of a training gap rather than a lack of attention. In interviews with fourteen UK GPs experienced in managing eating disorders, five had received no formal training in the area at all. GPs also described referral criteria built around BMI thresholds as excluding patients who would have benefited from early intervention.

How long do eating disorders typically go untreated?

A systematic review of 14 studies across seven countries found average durations of untreated illness of 29.9 months for anorexia nervosa, 53.0 months for bulimia nervosa and 67.4 months for binge eating disorder — roughly two and a half to five and a half years.

Do I need to be a specialist to recognise an eating disorder?

No. Recognising an eating disorder and treating one are different skills. You do not need to be a specialist, but you do need training, and earlier recognition matters: shorter time to treatment is associated with a greater likelihood of recovery.