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SKALA DAN SIFAT 'MASALAH'It is widely accepted that the major public health problems of developed and developing societies are increasingly degenerative, rather than infectious, diseases of the kind associated with changes over time in lifestyles. The most per- nicious of these is thought to be the ‘tide of obesity’ which is said to be ‘sweep- ing’ across the developed world in particular and which shows no sign of halting. In the USA, the number of obese adults has doubled since the mid- 1970s so that by the turn of the twenty-first century more than 60 per cent of American adults were classified as overweight or obese (Bouchard, 2000). In the UK, it is estimated that by 2010 75 per cent of the population will be over- weight, resulting in more than 30,000 deaths each year from weight-related illnesses (National Audit Office, 2001). The rapidity with which this ‘pan- demic of fat’ (World Health Organization [WHO], 2002) is becoming truly ‘global’ is illustrated by the revelation that China – a country which, until recently, was seen as having one of the leanest populations – is ‘fast catching up with the West’ with approximately one-fifth of the 1 billion overweight or obese people in the world living in China (Wu, 2006: 362). The prevalence of obesity among the young also appears to be increasing rapidly, particularly in the economically developed countries of the western world. In the USA, for example, Cohen et al. (2005: 154) point to ‘the tripling of overweight young people (ages 16–19) over the last 30 years’. Schenker (2005) estimates that 10 per cent of primary-aged youngsters in the UK are overweight and a further 2 per cent obese – a 100 per cent increase in both categories in the past decade. Elsewhere, Welk et al. (2006) point out the prevalence of obesity among Australian, Canadian, Chinese and Spanish youth. It seems that at current rates of increase, ‘“adult” percentages of overweight children will be reached within 30 years’ (Dollman, Norton and Norton, 2005: 895).
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