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Ever noticed how hard it is to find a two-finger Kit-Kat these days? Or how small and unsatisfying a normal size Galaxy looks next to its king-size sibling? These days more and more of us are supersizing our portions and snacks resulting in expanding waistlines and increasing health problems. With health experts campaigning for better food labelling and healthier portion sizes, we investigate the main danger zones to help you keep your diet on track...