Yogurt: Most commercial yogurt is loaded with sugar – as in, over 30 grams for 6 ounces! This, along with the fact that commercial yogurt is pasteurized (and some also contains artificial colors and flavors), is why you should walk right on by the yogurt section at your supermarket. Watch out, too, for "light" yogurt brands that boast less sugar due to toxic artificial sweeteners.
Canned Fruit: Fruit in and of itself can be problematic if eaten in excess, as it's a source of naturally occurring fructose. But many canned fruits are also packed in sugary syrup, loaded with high fructose corn syrup. Just one cup of canned peaches or pears can contain over 30 grams of sugar. You're far better off with a fresh piece of fruit instead, but use moderation. I recommend restricting your consumption of fructose to no more than 25 grams per day, with a maximum of 15 grams a day from fresh fruit. If you're already overweight, or have cancer, heart disease or diabetes (or are at high risk of them), then you're probably better off cutting that down to 10-15 grams per day -- fruit included.
On the other hand, yogurt that is made from raw organic milk, and which you eat either plain or only minimally sweetened with some berries or liquid stevia, is a true health food. This is something you can easily do at home and use the healthiest raw ingredients, including organic grass-fed raw milk as the starter.
Tomato Sauce: A cup of tomato sauce can add up to over 20 grams of sugar, and considering that most people eat that tomato sauce on top of pasta, another carb source, this could send you into sugar overload. Watch out, specifically, for brands that contain added sweeteners. Tomato sauce is a far better choice than a candy bar, but, ideally, make your own sauce at home, and serve it over shredded spaghetti squash instead of noodles.
Granola Bars: Sugar is often one of the top ingredients in granola bars, and, in fact, most are not much different than a candy bar, nutritionally speaking. Even the granola is simply another form of "hidden sugar" that most people eat far too much of. Remember, sugar and dietary carbohydrates (including grains like granola, which break down into sugar) lead to excess body fat, obesity and related health issues. No amount of exercise can compensate for this damage because if you eat a lot of sugar, it could be "reprogramming" your body to become fat.
Fat-Free Salad Dressing: When manufacturers take the fat out of a food, sugar is often added back in as a replacement. Fat-free French or Thousand Island dressings can contain over 40 grams of sugar as a result, turning a would-be healthy salad into something more resembling a dessert. Don't be fooled by the "fat-free" label -- it's the carbs that are the culprit in weight gain and chronic disease.
Muffins: The high amount of carbs in most muffins will profoundly interfere with your leptin and insulin levels, and that is true even if it's a "healthy" muffin, like a bran muffin. Of course, in order to make a bran muffin palatable, it probably contains quite a bit of added sugar, on top of the grains it's made with. Many muffins are also jumbo-sized, easily packing over 30 grams of sugar, or more.