Plenty of information is available for how to keep children eating health and preventing childhood obesity, but implementing plans is more challeging, says a University of Arizona nutrititionist.

Many American children have struggled with their weight for years now, and as conditions worsen, schools have joined in the fight against unhealthy children.

Offering healthy food in schools can play a big role in children's health, but Melanie Hingle, a research professor with the UA's Nutritional Sciences Department, says the food offered in school is just one of the many contributing factors.

Hingle says the public in general seems slow to put healthy practices in to place and has a lot of work to do in figuring out how to implement those practices.

"The overall aim of my research program is the prevention of childhood obesity," Hingle says.

She says she is looking at three areas in her research: the effects of health and media messages, the use of technology to deliver health information and the key role of parents.