Map of Simcoe Muskoka

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Adult Body Mass Index (BMI)

By Gender
By Age
By Education
By Chronic Conditions

Body mass index (BMI) is a ratio of weight to height (weight (kg)/height(m)2) and while it is not a direct measure of body fat, it is considered to be one of the most useful indicators of population health risks associated with both underweight and overweight/obesity.

The following table is adapted from Health Canada’s Canadian Guidelines for Body Weight Classification in Adults. This classification system is aligned with the World Health Organization’s (WHO) internationally adopted recommendations and is meant for use among Canadian adults aged 18 and over; however, it is not applicable to pregnant or lactating women. 

Adult Body Mass Index (BMI) Classification

CLASSIFICATION

BMI CATEGORY

RISK OF DEVELOPING HEALTH PROBLEM

POTENTIAL HEALTH PROBLEMS

Underweight

<18.5

Increased

- Undernutrition

- Osteoporosis

- Infertility

- Impaired Immunocompetence

Normal Weight

18.5 – 24.9

Least

 

Overweight

25.0 – 29.9

Increased

- Type 2 diabetes

- Dyslipidemia

- Hypertension

- Coronary heart disease

- Gallbladder disease

- Obstructive sleep apnea

- Certain cancers

Obese

30.0 and over

 

  Class I

30.0 – 34.9

High

  Class II

35.0 – 39.9

Very high

  Class III

40.0 and over

Highest

Adapted from: WHO (2000) Obesity: Preventing and Managing the Global Epidemic: Report of a WHO Consultation on Obesity.

 
According to the 2013/14 Canadian Community Health Survey (CCHS) conducted by Statistics Canada, approximately one-third (33% (29.1%, 36.6%) of Simcoe Muskoka adults (18 years and older) are considered normal weight, while 37% (33.5%, 40.4%) are overweight and 30% (26.7%, 33.2%) are obese. The prevalence of adult obesity in Simcoe Muskoka is significantly higher than Ontario as a whole.

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The percentage of adults (18+) that are obese in Simcoe Muskoka has increased significantly since 2000/01 and has been consistently above the Ontario average since 2003.

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By Gender
Obesity prevalence is significantly higher among males when compared to females and this difference is consistent in both Simcoe Muskoka and Ontario as a whole. In Simcoe Muskoka between 2009 and 2014 (combined), 31% (28.2%, 34.0%) of men were obese compared with 26% (23.9%, 29.2%) of women. Both the male and female obesity prevalence in Simcoe Muskoka was significantly higher than their respective provincial average.

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By Age
Obesity prevalence is highest among adults 45 to 64 years of age and this is consistent in both Simcoe Muskoka and Ontario as a whole. In Simcoe Muskoka between 2009 and 2014 (combined), 37% (32.2%, 39.2%) of adults 45 to 64 years were obese compared with 24% (20.8%, 27.3%) of 18 to 44 year olds and 26% (22.9%, 28.7%) of seniors 65 years and older. The obesity prevalence in Simcoe Muskoka was significantly higher than the provincial average among adults under 65 years of age.
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By Education
Obesity prevalence is lowest among those with a university degree or higher and this is consistent in both Simcoe Muskoka and Ontario as a whole. In Simcoe Muskoka between 2009 and 2014 (combined), 24% (19.2%, 29.4%) of adults 25 to 64 years with a University degree or higher were obese compared with 34% (28.3%, 39.2%) of those with a high school diploma or less and 35% (31.2%, 39.1%) of those with a college diploma or certificate. The obesity prevalence in Simcoe Muskoka among those with a college diploma/certificate or a university degree was significantly higher than their respective provincial average.
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By Chronic Conditions
​Obesity prevalence among those with certain chronic conditions is significantly higher when compared to those that do not have the chronic condition. In Simcoe Muskoka between 2009 and 2014 (combined), 50% (43.6%, 57.2%) of those with diabetes were obese compared with 27% (25.4%, 29.4%) among those with-out diabetes. Obesity prevalence among those with hypertension was 43% (38.0%, 47.7%) compared with 25% (22.7%, 27.1%) for those without hypertension. Obesity was also significantly higher among those with a mood disorder and heart disease when compared to those with-out the conditions; however, these differences were less pronounced than what was observed for diabetes and hypertension.
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