The level of intervention for obesity is based on BMI, waist circumference and presence of comorbidities.10
| BMI (kg/m 2 ) | Waist circumference (cm) | Comorbidity present* | ||
| Low risk | High risk | Very high risk | ||
| <94 (male) | 94–102 (male) | >102 (male) | ||
| <80 (female) | 80–88 (female) | >88 (female) | ||
| Overweight (25–29.9) | 1 | 2 | 2 | 3 |
| Obesity I | 2 | 2 | 2 | 3 |
| (30–34.9) | ||||
| Obesity II | 3 | 3 | 3 | 4 |
| (35–39.9) | ||||
| Obesity III | 4 | 4 | 4 | 4 |
| (40+) | ||||
1=general advice on healthy weight and lifestyle.
2=diet and physical activity.
3=diet and physical activity; consider medications.
4=diet and physical activity; consider medications; consider surgery.
*At least one of the following comorbidities should be present such as type 2 diabetes mellitus, hypertension, dyslipidaemia, ischaemic heart disease, obstructive sleep apnoea polycystic ovarian syndrome, osteoarthritis .10
BMI, body mass index.