Health         Santé                Canada         Canada Canadian Guidelines for Body Weight Classification in Adults Can...
- Body Mass Index (BMI) Nomogram -                                           - Body Mass Index (BMI) Nomogram -           ...
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Fact Sheet - Government of Canada

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Fact Sheet - Government of Canada

  1. 1. Health Santé Canada Canada Canadian Guidelines for Body Weight Classification in Adults Canadian Guidelines for Body Weight Classification in Adults -- Quick Reference Tool for Professionals -- Quick Reference Tool for ProfessionalsHighlights The Canadian Guidelines for Body Weight Classification in Adults The classification system is not intended for use with: uses the body mass index and waist circumference as indicators of health risk. • those under 18 years of age, and • pregnant and lactating women. This classification system is aligned with the World Health Organization’s Special consideration is also needed when using the classification system. (WHO) recommendations widely adopted internationally. It may underestimate or overestimate health risks in specific groups such as: This classification system is derived from population data. When used young adults who have not reached full growth, adults who naturally have a with individuals, weight classification is only one component of a more very lean body build, highly muscular adults, adults over 65 years of age, comprehensive health assessment needed to clarify health risk. and certain ethnic and racial groups. More information is provided in the full report available online (www.healthcanada.ca/nutrition).Body Mass Index (BMI) The BMI (weight (kg)/height (m)2) is not a direct measure of body fat but it is the most widely investigated and most useful indicator, to date, of health risk associated with under and overweight. Some health problems associated with Classification BMI Category Risk of developing body weight (kg/m2) health problems Overweight and Underweight* obesity Underweight < 18.5 Increased Normal Weight 18.5 – 24.9 Least Type 2 diabetes Undernutrition Overweight 25.0 – 29.9 Increased Dyslipidemia Osteoporosis Obese Hypertension Infertility Class I 30.0 – 34.9 High Coronary heart disease Impaired Class II 35.0 – 39.9 Very high Class III ≥ 40.0 Extremely high Gallbladder disease immunocompetence Obstructive sleep apnea Note: For persons 65 years and older the ‘normal’ range may begin slightly above BMI 18.5 and Certain cancers extend into the ‘overweight’ range. *May indicate an eating disorder or other underlying illness.Adapted from: WHO (2000) Obesity: Preventing and Managing the Global Epidemic: Report of a WHO Consultationon Obesity.Waist Circumference (WC) WC Cut-off Points Risk of developing WC is an indicator of health risk associated with excess abdominal fat. health problems* Men ≥ 102 cm (40 in.) Increased To determine WC, the measurer should stand beside the individual. WC is measured at the Women ≥ 88 cm (35 in.) part of the torso located midway between the lowest rib and the iliac crest (top of pelvic bone). The tape should fit without compressing any underlying soft tissues. *Risk for type 2 diabetes, coronary heart disease, hypertension. Adapted from: WHO (2000) Obesity: Preventing and Managing the Global Epidemic: Report of a WHO Consultation on Obesity. BMIHealth risk classification NORMAL OVERWEIGHT OBESE Class 1using both BMI and WC < 102 cm (Males) Least Risk Increased Risk High Risk < 88 cm (Females) WC measurement can be used for individuals with a BMI in the WC 18.5-34.9 range. For BMIs ≥ 35.0, WC measurement does not ≥ 102 cm (Males) Increased Risk High Risk Very High Risk provide additional information regarding level of risk. ≥ 88 cm (Females) Adapted from: National Institutes of Health (1998) Clinical Guidelines on the Identification, Evaluation, and Treatment of Overweight and Obesity in Adults: The Evidence Report.
  2. 2. - Body Mass Index (BMI) Nomogram - - Body Mass Index (BMI) Nomogram - Height (in) 57 59 61 63 65 67 69 71 73 75 77 79 81 140 308 135 297 130 286 125 275 For a quick determination of 120 264 BMI (kg/m2), use a straight- edge to help locate the point 115 253 on the chart where height (in 50 48 or cm) and weight (lb or 110 40 242 kg) intersect. Read the 46 44 number on the dashed 105 42 231 35 line closest to this 100 38 220 point. For example, an 36 individual who weighs 69Weight (kg) Weight (lb) 95 34 30 209 kg and is 173 cm tall has a 32 BMI of approximately 23. 90 198 85 28 25 187 26 80 176 24 75 75 165 22 70 23 18.5 65 70 20 154 60 65 18 143 55 50 60 16 132 45 40 55 14 121 145 150 155 160 165 170 175 50 110 Refer to the table below to identify the level of 45 99 health risk associated with a 40 88 particular BMI. 145 150 155 160 165 170 175 180 185 190 195 200 205 Height (cm) BMI Formula BMI Risk of developing health problems < 18.5 Increased BMI can also be calculated using 18.5 – 24.9 Least this formula 25.0 – 29.9 Increased 30.0 – 34.9 High BMI = weight in kilograms 35.0 – 39.9 Very high (height in metres)2 ≥ 40.0 Extremely high Note: 1 inch = 2.54 centimetres and 1 pound = 0.45 kilograms Note: For persons 65 years and older the ‘normal’ range may begin slightly above BMI 18.5 and extend into the ‘overweight’ range. Adapted from: WHO (2000) Obesity: Preventing and Managing the Global Epidemic: Report of a WHO Consultation on Obesity. To clarify risk for each individual, other factors such as lifestyle habits, fitness level, and presence or absence of other health risk conditions also need to be considered. The full report “Canadian Guidelines for Body Weight Classification in Adults”, and other resources are available online at: www.healthcanada.ca/nutrition © Her Majesty the Queen in Right of Canada (2003) ISBN 0-662-33496-5 Cat. No: H49-179/2003-1E Aussi disponible en français Health Santé Canada Canada

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