We have discussed a number of clear, obvious sources of sugar in foods, but many sources are not so obvious. As also happens with salt, many processed foods, even those you would not normally consider sweet, are laden with sugar.
You need to begin to read nutritional information on food labels, and pay careful attention to the amount of sugar per serving. Sometimes a serving is unrealistically small compared to what a person actually eats. In addition to the per-serving nutritional information, read the ingredients. They come in order of the most common ingredient first. Food processors often use several types of sweetener in a product. If you treated the sweeteners as a single ingredient, often sugar would actually rank as number one.
Corn syrup, high fructose, corn syrup, evaporated cane juice, concentrated grape juice, any fruit juice concentrate, unrefined brown sugar, maple syrup, molasses, barley malt and rice syrups, honey and agave nectar are all sweeteners. Honey supposedly has many health benefits, but it is much sweeter than table sugar. Whether a sweetener is “natural” or not makes no difference to someone who must limit sweetening for health reasons.