A new study in the "Journal of the American Dietetic Association" says kids meals packed at home often lack fruits, vegetables, and whole grains.
University of Texas researchers checked the lunches of 74 pre-schoolers for three days.
They found that 71 percent of packed lunches didn't have enough nutrients.
When interviewing the kids' parents they found 55 percent knew they weren't giving enough fruits and veggies.
Sixty-seven percent of the parents also said they packed nutritious foods, even though they figure their child won't eat them.
The researchers say kids should get at least five servings of fruits and vegetables a day.