For some kids, it’s the best part of the grocery shopping experience: the cereal aisle. Lines of boxes, vibrant and colorful, all vying for your child’s attention. But what’s lurking inside that box of cereal could be hazardous to your child’s health: enormous amounts of sugar.

“Overall, we need to choose cereals that are unsweetened, less than 10 grams of sugar per serving and also high in fiber,” says Marjorie Chutkhan, a Clinical Dietician for Lee Memorial Health System.

A recent study finds that some of your child’s favorite cereals can contain sugar equivalent to three glazed donuts. Sugar that can eventually become fat. Clinical dietician, Marjorie Chutkhan suggests purchasing a cereal that contains 5 grams of sugar, or less. “Eventually, they will appreciate, or will get familiar with choosing a better, healthier cereal.”

A strategy that could mean a faster, and healthier selection the next time you hit that cereal aisle. Also look for at least 5 grams of fiber in your child’s cereal as well.