It depends if you are consuming more calories/fat/carbs than you would normally, and also if you are exercising the same/more. If you consume less calories than you normally would then in theory yes you will loose weight.
But maybe not if you go from shredded wheat to sugar puffs - it does work (my trousers falling down all day proves that!) but obviously it has to be the right sort of cereal and not a lot of sugar (cornflakes, special K, fitnesse, fruit and fibre, shredded wheat, weetabix, etc as opposed to the more sweeter ones)
I tried the Crunchy Nut Cornflakes, drop a jean size in two weeks......... I carried on for eight weeks, had a proper meal in the evening and lost two stone.....WOW!!!
It does work, but you have to stick at it and no sneaking any cakes when no-ones looking
bluevern-is this true? Its possible to eat crunchy nut cornflakes for brekkie and lunch and lose weight? didnt you feel hungry between lunch and dinner?