The image of cereal bars as a healthy snack is a 'myth' according to a study by Which
Which? research shows high levels of sugar and fat. View the Which? report here.
The consumer group found all but one of the 30 bars it analysed were high in sugar, with more than half containing over 30% sugar.
One bar, Nutri-Grain Elevenses, contained nearly four teaspoons - more than in a small can of cola and 20% of the recommended daily allowance.
Other snacks it analysed were found to be high in fat and saturated fat.
The Tracker Roasted Nut bar, for example, was almost a third fat.
Meanwhile, six of the seven cereal bars targeted at children were high in saturated fat, the study found.
And Monster Puffs, a cereal bar marketed to children and described as "great for your lunchbox", contained 43.5% sugar - more than two teaspoons.