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The burden of cardiovascular disease associated with body mass index in the Asia-Pacific region
Oral Abstracts
S55
dence that highlights the importance of measuring central adiposity in addition to BMI in monitoring childhood obesity.
to ease the burden of cardiovascular disease associated with excess body weight. doi:10.1016/j.orcp.2010.09.108
doi:10.1016/j.orcp.2010.09.107
O43
O42 The burden of cardiovascular disease associated with body mass index in the Asia-Pacific region C.M.Y.
Lee 1,∗ ,
S.
Colagiuri 1 ,
M.
Woodward 2
Projected progression of the prevalence of obesity in Australia H.L. Walls 1,∗ , D.J. Magliano 1,2 , C. Stevenson 1 , K. Backholer 1 , H.R. Mannan 1 , J. Shaw 2 , A. Peeters 1
1 Boden Institute of Obesity, Nutrition and Exercise, University of Sydney, Australia 2 The George Institute for International Health, University of Sydney, Australia
1 Monash
Background: Studying obesity in the Asia-Pacific region is difficult because of the diverse ethnic background and different stages of economic and nutrition transition. The burden of cardiovascular disease associated with overweight (defined as body mass index ≥25 kg/m2 ) was previously estimated for countries within the region. However, using conventional cut-point of 25 kg/m2 ignores the continuous nature of the association. Our aim was to estimate the proportion of cardiovascular disease that would be prevented if the theoretical mean body mass index in the population was 21 kg/m2 . Methods: We searched Medline, WHO Global InfoBase and government websites for nationally representative studies in Asia-Pacific countries. Studies conducted since 2000 and reported sexspecific mean body mass index were included. Population attributable fractions were calculated by comparing exposures to the theoretical minimum distribution of body mass index of 21 kg/m2 . Results: Sixteen countries with 337,653 participants were included. Mean body mass index was the highest in American Samoa and the lowest in India. Coronary heart disease attributable to body mass index other than 21 kg/m2 ranged from 7% in Indonesia to 62% in American Samoa and Fiji. For ischaemic stroke, the population attributable fractions ranged from 7% in Indonesia to 75% in Fiji. Population attributable fractions were lower for Asian countries and higher for Pacific Island countries. Australia and New Zealand, with predominantly Caucasians, were in between. Conclusion: The burden of cardiovascular disease was up to six times higher than previous estimates. If cardiovascular risk increases from 21 kg/m2 applies to all populations, most countries in the region will need to reduce their current population mean body mass index substantially in order
Introduction: Projections of the future burden of obesity are essential for health policy decision-making. However, no such projections have been conducted using measures of overweight and obesity incidence — the most accurate method available. This paper aims to estimate the future burden of adult obesity in Australia using measures of overweight and obesity incidence. Methods: We derived multi-state life tables from the 5-year follow-up data of the Australian Diabetes, Obesity and Lifestyle Survey (AusDiab, 1999/2000—2005) and national mortality data. These models projected to 2025 the transitions through normal-weight, overweight and obesity of the cohort of people aged 25 years living in Australia in 2000. Results: If current patterns of weight gain continue, between 2000 and 2025 the adult prevalence of normal-weight will decrease from 40.6% to 28.1% and the prevalence of obesity will increase from 20.5% to 33.9% in Australia. By the time those people aged 25—29 in 2000 reach 60—64 years, 22.1% will be normal-weight and 42.4% will be obese. Conclusion: Assuming that the rates of weight gain observed in the first 5 years of this decade are maintained, our findings suggest a 70% increase in the prevalence of obesity amongst Australian adults over coming decades, and a high probability for contemporary normal-weight young adults of becoming overweight or obese. Conflict of interest: None disclosed.
University, Department of Epidemiology and Preventive Medicine, Melbourne, Australia 2 Baker IDI Heart and Diabetes Institute, Melbourne, Australia
doi:10.1016/j.orcp.2010.09.109
S55
dence that highlights the importance of measuring central adiposity in addition to BMI in monitoring childhood obesity.
to ease the burden of cardiovascular disease associated with excess body weight. doi:10.1016/j.orcp.2010.09.108
doi:10.1016/j.orcp.2010.09.107
O43
O42 The burden of cardiovascular disease associated with body mass index in the Asia-Pacific region C.M.Y.
Lee 1,∗ ,
S.
Colagiuri 1 ,
M.
Woodward 2
Projected progression of the prevalence of obesity in Australia H.L. Walls 1,∗ , D.J. Magliano 1,2 , C. Stevenson 1 , K. Backholer 1 , H.R. Mannan 1 , J. Shaw 2 , A. Peeters 1
1 Boden Institute of Obesity, Nutrition and Exercise, University of Sydney, Australia 2 The George Institute for International Health, University of Sydney, Australia
1 Monash
Background: Studying obesity in the Asia-Pacific region is difficult because of the diverse ethnic background and different stages of economic and nutrition transition. The burden of cardiovascular disease associated with overweight (defined as body mass index ≥25 kg/m2 ) was previously estimated for countries within the region. However, using conventional cut-point of 25 kg/m2 ignores the continuous nature of the association. Our aim was to estimate the proportion of cardiovascular disease that would be prevented if the theoretical mean body mass index in the population was 21 kg/m2 . Methods: We searched Medline, WHO Global InfoBase and government websites for nationally representative studies in Asia-Pacific countries. Studies conducted since 2000 and reported sexspecific mean body mass index were included. Population attributable fractions were calculated by comparing exposures to the theoretical minimum distribution of body mass index of 21 kg/m2 . Results: Sixteen countries with 337,653 participants were included. Mean body mass index was the highest in American Samoa and the lowest in India. Coronary heart disease attributable to body mass index other than 21 kg/m2 ranged from 7% in Indonesia to 62% in American Samoa and Fiji. For ischaemic stroke, the population attributable fractions ranged from 7% in Indonesia to 75% in Fiji. Population attributable fractions were lower for Asian countries and higher for Pacific Island countries. Australia and New Zealand, with predominantly Caucasians, were in between. Conclusion: The burden of cardiovascular disease was up to six times higher than previous estimates. If cardiovascular risk increases from 21 kg/m2 applies to all populations, most countries in the region will need to reduce their current population mean body mass index substantially in order
Introduction: Projections of the future burden of obesity are essential for health policy decision-making. However, no such projections have been conducted using measures of overweight and obesity incidence — the most accurate method available. This paper aims to estimate the future burden of adult obesity in Australia using measures of overweight and obesity incidence. Methods: We derived multi-state life tables from the 5-year follow-up data of the Australian Diabetes, Obesity and Lifestyle Survey (AusDiab, 1999/2000—2005) and national mortality data. These models projected to 2025 the transitions through normal-weight, overweight and obesity of the cohort of people aged 25 years living in Australia in 2000. Results: If current patterns of weight gain continue, between 2000 and 2025 the adult prevalence of normal-weight will decrease from 40.6% to 28.1% and the prevalence of obesity will increase from 20.5% to 33.9% in Australia. By the time those people aged 25—29 in 2000 reach 60—64 years, 22.1% will be normal-weight and 42.4% will be obese. Conclusion: Assuming that the rates of weight gain observed in the first 5 years of this decade are maintained, our findings suggest a 70% increase in the prevalence of obesity amongst Australian adults over coming decades, and a high probability for contemporary normal-weight young adults of becoming overweight or obese. Conflict of interest: None disclosed.
University, Department of Epidemiology and Preventive Medicine, Melbourne, Australia 2 Baker IDI Heart and Diabetes Institute, Melbourne, Australia
doi:10.1016/j.orcp.2010.09.109