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2 Introduction2.1 Why a healthy diet is important for children<strong>Food</strong> is meant to nourish children and help <strong>the</strong>m grow. A child’s diet can haveprofound <strong>in</strong>fluence upon his or her health, with effects that reach well <strong>in</strong>toadulthood. There are many factors that encourage children to choose foods thatare not good for <strong>the</strong>m, and food preferences (and brand preferences) learned <strong>in</strong>childhood may persist <strong>in</strong>to adult life.A poor diet can contribute to a child becom<strong>in</strong>g obese, or anaemic, or suffer dentaldecay. Childhood obesity can give rise to mechanical damage to jo<strong>in</strong>ts andgrow<strong>in</strong>g bones, and obesity and poor nourishment may lead to <strong>in</strong>creased risk ofdegenerative diseases later <strong>in</strong> life, <strong>in</strong>clud<strong>in</strong>g diabetes, osteoporosis, high bloodpressure, heart disease, and certa<strong>in</strong> cancers (Roos and Prattala, 1999; Frankel,1998).The consensus <strong>view</strong> on sugars and disease identifies those sugars which arenei<strong>the</strong>r naturally present <strong>in</strong> milk nor <strong>in</strong>tr<strong>in</strong>sically bound up <strong>in</strong> <strong>the</strong> cells ofunprocessed fruit as ‘Non-Milk Extr<strong>in</strong>sic’ (NME) sugars, and states that NMEsugar consumption is a cause of dental caries (COMA, 1991). The greatest toothdecay is found among those who consume sugar most frequently. Parents may beaware that consum<strong>in</strong>g sweets between meals can threaten teeth as well as spoil<strong>in</strong>g<strong>the</strong> appetite, but <strong>the</strong>y may not be aware that frequency of consumption is <strong>the</strong>greatest risk factor, and <strong>the</strong>refore that sweet snacks and dr<strong>in</strong>ks between meals are<strong>the</strong> most likely cause of tooth damage. Nor may <strong>the</strong>y realise that ref<strong>in</strong>ed starchesmay also play a part <strong>in</strong> caus<strong>in</strong>g dental caries, as <strong>the</strong>y form a sticky paste around<strong>the</strong> teeth. The comb<strong>in</strong>ation of sugars and sticky starches – for example <strong>in</strong> <strong>the</strong>forms of biscuits and sweet breakfast cereals – may be especially damag<strong>in</strong>g(Rugg-Gunn and Nunn, 1999).6

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