SeriesHealth and economic burden of the projected obesity trends in the USA and the UK
Section snippets
Threat to population health
Increased prevalence of overweight and obesity is a worldwide health concern.1 In a systemic analysis of epidemiological studies from 199 countries,1 1·46 billion adults worldwide were estimated to be overweight in 2008, and of these 502 million were obese. Despite signs of stabilisation in some populations,2, 3 the effects of consistently high prevalence of obesity on population health are far-reaching; societies are burdened by premature mortality, morbidity associated with many chronic
Health burden from rising obesity
The health burden from obesity is largely driven by an increased risk of type 2 diabetes, cardiovascular diseases, and several forms of cancer. For instance, every additional 5 kg/m2 in BMI increases a man's risk of oesophageal cancer by 52% and for colon cancer by 24%, and in women, endometrial cancer by 59%, gall bladder cancer by 59%, and postmenopausal breast cancer by 12% (the association is strongest in women in the Asia–Pacific region).8 Excess bodyweight also contributes to non-fatal
Economic cost of rising obesity
The many chronic and acute health disorders associated with excess bodyweight burden a society not only by negatively affecting the health-related quality of life12, 13 of its people but also by incurring substantial costs to the individuals affected and to society, notably from increased health-care costs and lost productivity.
The medical costs of obesity represent the monetary value of health-care resources devoted to managing obesity-related disorders, including the costs incurred by excess
BMI trends
We analysed two nationally representative surveys to obtain trends in BMI: the National Health and Nutrition Examination Survey (NHANES)27 from the USA and the Healthy Survey for England (HSE)28 from the UK. Both surveys contain objectively measured weight and height data (table 1 and panel). Separately for the two countries, a set of two projections were made to provide a probable range of the outlook of growth in obesity prevalence within populations in the next 20 years. The historic trend
Loss of productivity
The economic costs from the excess morbidity and mortality attributable to obesity-related diseases go beyond health-care costs alone, perhaps most notable are the consequent losses in productivity. The shortage of consistent and high-quality data precludes cross-country comparisons. We explored the size of this indirect cost burden for the USA alone in the context of the health-care costs projected by our model. After incorporation of estimates by Finkelstein and colleagues43 of the
Discussion
In this report, by drawing similar statistics from the USA and the UK into the same modelling structure, we have had the opportunity to describe how the seemingly similar obesity epidemic unfolds in two populations. In the years 2010–30, the continuing rise in obesity was projected to add a combined 6–8·5 million incident cases of diabetes, 5·6–7·3 million incident cardiovascular diseases, and more than half a million new cancers in the USA and the UK. In addition to compromising the
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