Eating-disorder cognitive distortion can negate “weighing” capacity: authorisation of urgent, invasive treatment (and ancillary detention) under the High Court’s inherent jurisdiction

1. Introduction

This decision concerns an application by the Health Service Executive (“HSE”) to authorise (i) laparoscopic removal of a gastric band and (ii) a period of post-operative inpatient treatment in a specialised eating-disorder unit, in circumstances where the respondent—an adult living independently—strongly objected to the proposed interventions.

The central legal questions were:

• Capacity: whether the respondent lacked capacity to decide on the surgery and the post-surgical treatment, applying the functional test (under the inherent jurisdiction, informed by the Assisted Decision-Making (Capacity) Act 2015).
• Necessity and proportionality: even if capacity was lacking, whether authorising highly invasive treatment (and a liberty restriction inherent in inpatient admission) was necessary and proportionate to vindicate the respondent’s constitutional rights—particularly where she persistently refused.
• Urgency and risk: whether the medical evidence established a sufficiently grave and imminent risk (including risk of death) to justify compulsory intervention.

The respondent was represented through a court-appointed guardian ad litem, who obtained independent expert evidence and ensured close scrutiny of the HSE’s case.

Reporting restrictions

The Court directed that the matter be heard with restrictions more stringent than the usual approach under s. 27 of the Civil Law (Miscellaneous Provisions) Act 2008, because (a) anonymisation might not prevent identification on the particular facts and (b) reporting risked causing the respondent significant additional distress.

2. Summary of the Judgment

3. Analysis

3.1 Precedents cited (and their influence)

(a) In the matter of K.K. [2023] IEHC 565 (K.K. No 2)

The Court treated K.K. No 2 as the leading modern High Court authority structuring (i) the capacity inquiry and (ii) the proportionality analysis where the proposed plan includes a curtailment of liberty.

Mr Justice O’Donnell adopted Hyland J.’s proportionality framework (para. 30 in K.K. No 2) as a step-by-step constitutional balancing exercise:

“(a) the type of restrictions on the liberty … (b) the constitutional rights negatively impacted … (c) the constitutional rights sought to be protected … (d) … a balancing exercise … and (e) … proportionality …”

This framing mattered because the HSE was not merely seeking permission for a discrete medical act; it sought a pathway that necessarily entailed inpatient admission and, potentially, coercive measures to implement and sustain treatment.

(b) Fitzpatrick v. F.K. [2009] 2 I.R. 7

Capacity was assessed using the functional test associated with Fitzpatrick v. F.K., as subsequently understood in light of the Assisted Decision-Making (Capacity) Act 2015. The Court explicitly applied the familiar four-part decision-specific inquiry: understand, retain, use/weigh, communicate.

In practical terms, Fitzpatrick v. F.K. anchored the Court’s ability to find incapacity even where the respondent was intelligent, articulate, and could repeat back medical facts—because the decisive impairment lay in evaluative processing (the “weighing” limb), not comprehension or expression.

(c) In the matter of C.F. [2024] 1 I.L.R.M. 30

The Court drew on Barniville P.’s distillation of core principles for authorising medical interventions for adults lacking capacity. Several aspects had concrete operational significance in this case:

• Presumption of capacity and the need for evidence to rebut it;
• Rights persist despite incapacity (the person does not lose constitutional protections);
• Strong presumption in favour of life, particularly relevant where the surgical evidence identified a non-trivial risk of fatal perforation;
• Weight to expressed wishes, even where not determinative—critical here because the respondent’s opposition was consistent, clearly expressed, and rooted in autonomy and trauma history.

(d) Doe v Commissioner of An Garda Síochána [2025] IESC 44

The reference to Doe v Commissioner of An Garda Síochána was a doctrinal caution: while “dignity” is often invoked in medical treatment cases, its status as a free-standing constitutional right is not settled in simplistic terms. The Court therefore located the analysis in a broader cluster of recognised rights (life, bodily integrity, autonomy, privacy, equality), while acknowledging the Supreme Court’s guidance on careful classification.

3.2 Legal reasoning

(a) The Court’s approach to medical evidence and fact-finding

The Court emphasised institutional competence: it was not for the Court to “carry out its own assessment” of capacity; capacity must be established by expert evidence. Here, that evidence was not merely one-sided; it was unanimous across treating and independent experts. Similarly, on surgical necessity, two highly qualified bariatric surgeons (one independent) converged on the same critical conclusions, supported by objective imaging (barium swallow study).

Importantly, the decision did not treat the dispute as a mere contest of preferences. The Court made specific factual findings that underpinned proportionality:

• The gastric band was “dangerously obstructing” flow to the stomach, with gross oesophageal dilation.
• The risk landscape included malnutrition, pseudoachalasia, ischaemia, perforation, and death.
• Deflation alone was not an adequate clinical alternative; removal was necessary.

(b) Capacity: “unwise decision” vs inability to weigh

A key jurisprudential contribution is the Court’s clear separation between:

• An unwise but capacitous refusal (which the law must respect), and
• A refusal produced by incapacity, where the person cannot carry out the decision-making function required by law.

The Court found the respondent could understand, retain, and communicate information, but could not use or weigh it because the eating disorder’s cognitive distortions gave overriding primacy to avoidance of weight gain—even over survival. The respondent’s evidence about work, rent, and a preference for gradual de-filling was treated respectfully as reasonable in isolation, yet ultimately probative of the clinicians’ central point: the decision-making process was dominated by a pathological weighting that could not be displaced by evidence of grave medical risk.

(c) Proportionality: balancing bodily integrity/autonomy against life and health

Having found incapacity, the Court still treated authorisation as a separate, rights-based decision. The plan entailed:

• Invasive surgery under general anaesthetic;
• Post-operative inpatient treatment, necessarily curtailing liberty;
• Potential use of transport/removal to hospital and restraint (though only as last resort);
• Use of GLP-1 medication “off label”, as part of mitigating post-removal hunger/rapid weight gain distress and supporting rehabilitation.

The Court accepted these measures interfered with autonomy and bodily integrity and could have short-term socio-economic repercussions. Nonetheless, it concluded the alternative—non-intervention or a less intrusive approach (e.g., deflation only; outpatient support)—did not adequately address:

• The immediate physical dangers (complete obstruction; severe dilation; perforation risk), and
• The clinical reality that effective eating-disorder treatment required structured support around re-feeding risks and behavioural rehabilitation.

In effect, the Court treated proportionality as grounded in clinical necessity plus constitutional urgency: where the evidence demonstrated appreciable risk to life and serious long-term harm, the legal balance shifted decisively, even in the face of sustained objection.

(d) Minimisation, last resort, and ongoing supervision

A notable feature is the Court’s insistence on “least intrusive” implementation:

• Cooperation should be sought before coercive powers are used.
• Restraint/removal powers were explicitly described as last resort.
• The Court would keep the matter under close review, ensuring orders persist only while incapacity and proportionality persist.

This reflects an important safeguard pattern in inherent jurisdiction cases: where liberty and bodily integrity are at stake, authorisation is not treated as a blank cheque, but as a conditional, supervised legal framework responsive to changing capacity and clinical circumstances.

3.3 Impact

The decision is likely to influence future Irish High Court applications involving adults with eating disorders and urgent physical complications by:

• Clarifying “weighing” incapacity: confirming that a person may appear rational and informed yet lack capacity where psychopathology makes genuine balancing impossible.
• Reinforcing the two-stage structure: incapacity does not automatically justify intervention; the Court must still assess necessity and proportionality, particularly where detention-like measures are inherent.
• Validating objective medical imaging (here, barium swallow evidence of complete obstruction) as a powerful anchor for urgency and risk.
• Integrating socio-economic impacts into proportionality without allowing them to eclipse grave life/health risks; the Court explicitly weighed employment, rent, and privacy concerns yet categorised them as short-term compared to catastrophic medical outcomes.
• Strengthening procedural rigor through the role of a guardian ad litem and independent experts, improving fairness where the affected person is resisting treatment.

It may also be cited on implementation safeguards—least-intrusive execution, last-resort coercion, and continuing review—features that can reduce the rights-cost of compulsory healthcare orders while preserving clinical efficacy.

4. Complex concepts simplified

4.1 Inherent jurisdiction (in this context)

The High Court’s inherent jurisdiction is a residual protective power used to safeguard vulnerable persons where statutory mechanisms do not fully resolve the situation. It is exercised through a constitutional, rights-based lens and typically demands strong evidence, careful proportionality analysis, and procedural safeguards.

4.2 The functional test for capacity

Capacity is decision-specific and time-specific. The key question is not whether the person is generally capable, but whether they can make this decision now. The four abilities are: understand, retain, use/weigh, communicate. In this case, only “use/weigh” was impaired.

4.3 “Use or weigh” information

This is the evaluative part of decision-making: the ability to compare outcomes, consider risks/benefits, and arrive at a choice that reflects the person’s values rather than a pathological distortion. The Court accepted that OSFED-related cognitive distortions made avoidance of weight gain outweigh even survival risk, preventing real balancing.

4.4 Proportionality

Proportionality asks whether the proposed interference with rights (autonomy, bodily integrity, liberty) is justified by the rights protected (life, health) and whether the measure goes no further than necessary (least intrusive option consistent with achieving the protective aim).

4.5 Key medical terms (briefly)

• Barium swallow: an imaging study showing how swallowed contrast passes from oesophagus to stomach; here it showed prolonged non-passage consistent with complete obstruction.
• Oesophageal dilation: abnormal widening that can impair function and raise risk of rupture.
• Pseudoachalasia: a motility disorder where the oesophagus may not move food properly, potentially permanent and life-altering.
• Perforation: a tear/hole in stomach or oesophagus; a life-threatening emergency.
• Re-feeding syndrome: dangerous metabolic shifts when nutrition is reintroduced after malnutrition; requires monitoring.
• Off-label GLP-1 use: prescribing an approved medicine for a non-licensed indication; lawful but requires careful clinical justification and monitoring.

5. Conclusion

Health Service Executive v R.F. (Approved) [2026] IEHC 570 confirms that, in the context of serious eating disorders, incapacity may manifest not as misunderstanding, but as an inability to weigh risk information because psychopathology assigns overriding, distorted priority to weight-related fears. The Court then applied a structured constitutional proportionality analysis—particularly attentive to liberty restrictions—yet authorised urgent invasive treatment where objective evidence showed appreciable risk of death and serious permanent harm, no adequate less-intrusive alternative, and a need for supervised rehabilitation.

The decision’s practical significance lies in its insistence on (i) rigorous expert evidence, (ii) separation between incapacity and best-interests/proportionality authorisation, and (iii) safeguards in execution: least-intrusive implementation, last-resort coercion, and ongoing judicial review.