NEW GUIDELINES on our sugar intake miss the mark a bit. The insistence in a draft report by the Scientific Advisory Committee on Nutrition (SACN) that we halve the amount of sugar we consume sounds like good sense, but our consumption of sugar is a little more complicated than the number of lumps added to a cup of tea. SACN knows that it is the hidden sugars that are doing the damage; those that naturally exist in fruit juice or so-called healthy drinks with natural fruit purée as flavouring. It makes the common-sense suggestion that parents limit fruit juice to one serving a day and never allow sweetened drinks. That, unfortunately, is not even the half of it. We should also be talking about sugars in such foods as brown bread, cereals such as muesli, salad dressing and pasta sauc