TAILIEUCHUNG - Ebook ABC of obesity

(BQ) Ebook “ABC of obesity” has contents: Obesity—time to wake up, assessment of obesity and its clinical implications, managemen Part I—Behaviour change, strategies for preventing obesity, risk factors for diabetes and coronary heart disease, obesity and vascular disease, and other contents. | Downloaded from on 13 January 2009 Practice ABC of obesity Obesity—time to wake up This is the first article in the series David Haslam, Naveed Sattar, Mike Lean Definition of obesity x Obesity is excess body fat accumulation with multiple organ-specific pathological consequences x Obesity is categorised by body mass index (BMI), which is calculated by weight (in kilograms) divided by height (in metres) squared. A BMI > 30 indicates obesity and it is reflected by an increased waist circumference x Waist circumference is a better assessor of metabolic risk than BMI because it is more directly proportional to total body fat and the amount of metabolically active visceral fat Proportion obese (%) North America and Cuba Western Europe Latin America and the Caribbean Central and eastern Europe Middle East 30 China and Vietnam South East Asia Japan, Australia, Pacific Islands Africa Men 20 10 0 Proportion obese (%) The obesity epidemic in the United Kingdom is out of control, and none of the measures being undertaken show signs of halting the problem, let alone reversing the trend. The United States is about 10 years ahead in terms of its obesity problem, and it has an epidemic of type 2 diabetes with obesity levels that are rocketing. Obesity is a global problem—levels are rising all over the world. Moreover, certain ethnic groups seem to be more sensitive than others to the adverse metabolic effects of obesity. For example, high levels of diabetes and related diseases are found in South Asian and Arab populations. Although most of the medical complications and costs of obesity are found in adults, obesity levels are also rising in children in the UK and elsewhere. 40 Women 30 20 10 0 5-14 15-29 30-44 45-59 60-69 70-79 ≥80 Age (years) Prevalence of obesity worldwide. Adapted from Haslam D, James WP. Lancet 2005;366:1197-209 640 25 Boys aged 6-10 years Obese Overweight 20 15 10 5 0 Prevalence (%) Obesity can be dealt with using .

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