A 5-year observational cohort study has highlighted significant differences in the rate, type and outcomes of bariatric surgery between a metropolitan and provincial area in northern New Zealand. While patients in the metropolitan area were less obese and had a lower rate of diabetes than patients in the provincial area, they had a wider range of procedures performed. The bariatric surgery rate among those with class III obesity was 6.1 times higher in the metropolitan versus provincial cohort. Māori were underrepresented in both cohorts. Changes in national and regional policies are needed to ensure equitable care for patients with obesity in New Zealand, the study authors concluded.