The supplied article text does not contain the actual body of this piece. Instead of the nutritionist's cereal guidance, only Daily Mail's website navigation menu and a list of unrelated headlines (covering topics such as an earthquake in Japan, Channel migrant crossings, and celebrity news) were provided, so no genuine content from this article could be extracted or verified.

Based on the headline alone, the piece is understood to feature a nutritionist identifying which supermarket cereals are healthiest and which should be avoided, likely covering factors such as sugar, fibre and whole-grain content. However, none of the specific product names, brands or nutritional details referenced in the actual article are present in the text supplied, so these cannot be accurately summarised without access to the full original content.