The respondent, who suffers from bipolar disorder, refused proposed medical treatment.
The attending physician found him incapable of making this decision, and the Consent and Capacity Board confirmed this finding.
On judicial review, the Superior Court of Justice overturned the Board's decision, finding it unreasonable and based on a misapplication of the statutory test for capacity.
The Court of Appeal upheld this decision.
The Supreme Court of Canada dismissed the appeal, holding that the Board's finding of incapacity was unreasonable because it conflated the respondent's best interests with his capacity to decide, and failed to recognize that the respondent understood his condition and the consequences of refusing treatment.