Visual impairment:
diabetic retinopathy,
cataract and glaucoma
Kidney disease
(diabetic nephropathy)
Sexual dysfunction
Sensory impairment
(peripheral neuropathy)
Ulceration
Stroke
(cerebrovascular disease)
Heart disease
(cardiovascular disease)
Bacterial and fungal
infections of the skin
Severe hardening of
the arteries(atherosclerosis) Autonomic neuropathy
(including slow emptying
of the stomach and diarrhea)
Necrobiosislipidoica
Gangrene
Poor blood supply to lower limbs
(peripheral vascular disease)
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ClassificationBMI (kg/m
2
) Risk of Co-morbidities
Underweight <18.5 Low (but risk of other clinical problems increased)
Normal range 18.5-24.9 Average
Overweight* ≥25
Pre-obese 25.0-29.9 Mildly increased
Obese >30.0
Class I 30.0-34.9 Moderate
Class II 35.0-39.9 Severe
Class III 40.0 Very severe
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