Actually, potatoes aren't as bad as people make them out to be. Some of the starches in potatoes are very similar to fiber, and they do contain quite a few vitamins and minerals (the article doesn't mention B6, thiamin, riboflavin, folate, niacin, magnesium, phosphorus, iron, or zinc that potatoes have). The important thing is to leave the skin on and not fry them.
Sweet potatoes are known to help stabilize blood sugar levels.
They do have fiber, and other vitamins. I'm not trying to say they are as empty as sugar candy. But compared to the other foods on the list they just don't fare as well. There are many other foods that should have taken their spot.
Sweet potatoes are known to help stabilize blood sugar levels.