Obesity and colorectal cancer: molecular features of adipose tissue

Table 1 Methods and ratios more commonly used to determine obesity

Index	Range		Ref.
Body mass index (kg/m²)	Underweight < 18.5		[38]
	18.5 < Normal <24.9
	25 < Overweight <29.9
	30 < Obesity
Visceral adiposity ratio	Moderate	Severe	[31]
<30 years	2.59–2.73	>2.73
≥30 < 42 years	2.54–3.12	>3.12
≥42 < 52 years	2.17–2.77	>2.77
≥52 < 66 years	2.32–3.25	>3.25
≥66 years	2.42–3.17	>3.17
Waist-to-hip ratio	Women	Men	[28]
	Normal < 0.8	Normal < 0.9
	0.81 < Overweight < 0.84	0.91 < Overweight < 0.99
	0.85 < Obesity	1.00 < Obesity
Waist-to-height ratio	Women	Men	[26, 27]
	Extremely slim < 0.34	Extremely slim < 0.34
	0.35 < Slim < 0.41	0.35 < Slim < 0.42
	0.42 < Healthy < 0.48	0.43 < Healthy < 0.52
	0.49 < Overweight < 0.53	0.53 < Overweight < 0.57
	0.54 < Obesity	0.58 < Obesity
Biolectrical impedance (% fat)	Women	Men	[30]
	28.3 ± 5.1 Normal	18.0 ± 4.5 Normal
	35.7 ± 2.8 Overweight	23.3 ± 4.2 Overweight
	41.6 ± 3.9 Obese	31.2 ± 5.1 Obese
Visceral-to-subcutaneous fat ratio	Healthy (gynoid fat) < 0,4 < Risk (android fat)		[34–36]

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