Where Hidden Sugar Sneaks Into 'Healthy' Foods

First, a reference point, because hidden sugar only matters relative to a sensible target. The World Health Organization recommends keeping free sugars to under 10 percent of your total energy, and suggests aiming below 5 percent for extra benefit. Free sugars means the sugar added to foods plus the sugar naturally present in honey, syrups, and fruit juice. For a typical adult, the lower target lands around 25 to 30 grams a day, which is roughly six to seven teaspoons.

The American Heart Association frames it in similar territory: a prudent daily cap of about 25 grams for most women and 36 grams for most men. The exact number matters less than the scale. It is small. A single flavoured yoghurt and a smoothie can use most of it before lunch, which is exactly why the hidden sources are worth knowing.

Here is roughly where the sugar hides in foods that market themselves as healthy. Figures are typical ranges and vary a lot by brand, which is exactly the point: two products on the same shelf can differ enormously, so the label is your only reliable guide.

The low-fat dressing is the clearest trap. When fat is stripped out of a product, something has to replace the flavour and mouthfeel, and that something is frequently sugar. Low-fat and light are claims about one nutrient, not a verdict on the whole food.

1. Find the "of which sugars" line. On the nutrition panel, this sits under total carbohydrate. As a rough guide, over 15 grams per 100 grams is high and under 5 grams per 100 grams is low. Then scale it to how much you will actually eat.
2. Scan the ingredients list. Ingredients are listed by weight, most first. If a sugar appears in the first two or three items, the food is largely sugar, whatever the front of the pack says.
3. Count the aliases. Manufacturers often split sugar across several names so none looks dominant. If you see three or four different syrups and -ose words, add them together in your head.
4. Compare two products. The single most useful habit is picking up the item next to it and comparing the sugar line. The gap between brands is often larger than any swap you could make elsewhere.

Front-of-pack claims are marketing, not nutrition. A few phrases deserve extra suspicion because they say nothing about sugar while implying health.

• No added sugar can still mean high in natural free sugars, for example a smoothie or fruit juice that is naturally sugar-dense.
• Naturally sweetened usually means sweetened with honey, agave, or fruit concentrate, which still count as free sugars.
• Made with real fruit tells you nothing about how much, and the sweetness often comes from added syrup rather than the fruit.
• High in protein or high in fibre can sit right next to a hefty sugar load. One good number does not cancel another.

This is the same health halo effect that makes people eat more of a food they believe is virtuous. The label is designed to make you feel good about the purchase. The nutrition panel is where the actual answer lives.

You do not need to overhaul your shopping or hit zero sugar. Because a handful of foods carry most of the hidden load, changing just those tends to bring a normal day comfortably back into range.

• Buy plain yoghurt and add your own fruit. This one swap can save 10 to 18 grams of sugar per pot.
• Treat smoothies and juice as an occasional drink, and reach for whole fruit most of the time, which keeps the fibre and slows the sugar.
• Check your sauces and dressings once. Pick the lower-sugar version and you never have to think about it again.
• For breakfast, lean on oats, eggs, or plain yoghurt rather than the boxed cereals and bars that front-load sugar into your morning.