In the U.S., studies show 1 in 5 children between the ages of six and 19 have a body mass index at or above the 95th percentile, which is considered obese. Many adults are also obese. And when mom and dad are overweight, their kids are 80% more likely to have a weight problem too.

Experts say those easy, quick, and cheap options are fueling an obesity epidemic in kids.

"The first thing that comes to mind is price and convenience, not health," said Steven Burroughs, a nutritionist from the University of Central Florida.

Business Insider ranked fast food for kids: Chick-fil-A’s grilled nuggets kids meal weighed in as the worst with 570 calories. Subway’s ham and cheese kids' meal tops the list with more than half the calories and sodium.

And just because you’re not eating out, you still need to watch what you’re making at home.

"A big concern would be the amount of salt or sodium in some of the processed foods that kids really like, like chips or canned foods or packaged foods," says Burroughs.

The CDC recommends 1500 milligrams of sodium for small children and up to 2300 for older kids.

High sodium intake is significantly associated with higher levels of body fat in kids.

According to the CDC, the number one source of sodium is bread. In fact, one sandwich on wheat bread contains almost 350 milligrams of sodium. A better choice is a lettuce wrap.

The average slice of pizza can contain up to 600 milligrams of sodium. Other foods high in sodium are pasta sauces, soups, cheeses, and deli meats.

A parent's best bet is to check the labels for calories, fat and sodium.