Myth: If the label says 'low fat' or 'reduced fat' then the product will always be a healthy choice
Foods labelled 'low fat' or 'reduced fat' aren't necessarily low in energy. The fat is replaced by other ingredients, so the product can end up with the same or an even higher energy (calorie) content.
Also, if you're tempted to use more of a reduced-fat product than you would of the full-fat version, you might end up having the same, or even more, fat and energy.