RANKED: These are the breakfast cereals with the least sugar

Breakfast cereals may have the most obtrusive advertising in the whole grocery store.

"Whole grain! Excellent source of fiber! No high fructose corn syrup!" they shout at you from the shelves.

But most cereals are highly processed foods, often with a lot of added sugar, whether it's named on the ingredients list as regular sugar, milled cane sugar, brown sugar, or honey.

Americans eat twice as much sugar as we're supposed to on average, and one of those sources of sugars could be your morning cereal. All you have to do is check the package to find out.

I went to the grocery store and photographed every cereal on the shelves to see how much sugar they contained (don't worry, I narrowed this list down to the most popular ones). These are ranked from most sugar to least sugar based on a serving size of 3/4 cup, which was most common.

See how they stack up — you may be surprised:

All Bran Buds: 18 g

Quaker Real Medleys: 14 g

Raisin Bran: 13.5 g