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Dr. McNally says, "Five fruits and veggies a day, four glasses of water, three servings of low-fat dairy, no more than two hours of square box time which is your TV, video games, computer any of that kind of stuff and then at least an hour of running around and being active."

Along with that, parents need to make sure their kids are getting lots of fiber and buying low-fat options.

And while the chip aisle may be the most popular aisle at the grocery store for kids, Dr. McNally says if you want to have heart healthy kids, junk food like chips, cookies and pop should be left in the store and out of your house.

She says, "The extra sugar and calories are exactly what your kids don't need. They also don't need the extra weight. "

If you have an overweight child, her advice is to get it under control. If you don't, "it can lead to heart problems, it can lead to diabetes, it can lead to a lot of troubles later in life."