There are no bad foods, only bad diets. So say many nutritionists, who (62) the demonization (妖魔化) of some foods as junk. On the evidence, there are an awful lot of bad diets around. A recent nationwide weigh-in of 11-year-olds (63) that at a fifth were obese and since being weighed was voluntary and larger children were less () to step on the scales, this was no doubt an underestimate. So Ofcom, the communications watchdog, has (65) that it may be time for a little food demonization after all. In the following few months it is to bring in a ban (66) advertising foods that contain lots of fat or sugar during TV shows that (67) particularly to children. And brand advertising, where no particular products is mentioned, will be (68) . The basic idea is popular with parents, who see it as an easier option than using the off switch. There are also worries about the specific foods (69) . Ofcom is using a "nutrient-profiling scheme", in which foods are (70) points for their good qualities (containing fruit or vegetables, say) and penalized for bad ones (lots of salt, sugar or fat). But the calculations are (71) on a 100g-portion of the food, so condiments (佐料) such as Marmite and ketchup, which are never (72) in such large quantities, are out. And nutritionally valueless foods containing fat and sugar substitutes may pass muster， (73) nutritionally dense staples such as some cheese will not． (74) breast milk for sale, it would be banned， (75) it is too high in fat and sugar. Sweden and Norway, which have the usual Scandinavian (76) for public health, get round these definitional difficulties (77) banning all advertising to children. The immediate impact on food industry in Britain will anyway be (78) , as these newly dubbed junk foods are not often heavily advertised. But there is more at (79) than the food industry’s interests. Anyone cutting out entire food groups is likely to suffer vitamin and mineral (80) . Many girls already avoid dairy products for fear of gaining weight, and giving them another reason to (81) themselves is a bad idea.