Avoid processed foods, regardless of what's in it.

Since the 80's and the low-fat movement, the fat was replaced by gobs of sugar. Which was later replaced by corn syrup.

Doesn't really matter which one you're eating, the high glycemic index is the killer with both. And lots of simple carbs in your diet is (as the medical community is finally starting to acknowledge) the real driver with today's cardiovascular unhealth. It's what damages arteries, cholesterol shows up to repair that damage.

Which is all the reason in the world to avoid processed foods. They will always have a crap macronutrient composition, and sugar is always way too high.