The salad bar program has now been expanded to more than 60 schools throughout the 750,000-student school district, Slusser told Reuters Health, while other schools in the state and across the US are introducing similar programs.

"It's definitely a real movement around the whole country," she said. "I think that's reflected in the Farm Bill."

To investigate how a salad bar would influence children's eating habits, Slusser and colleagues interviewed 337 students in 1998, before the salad bar was introduced, and afterwards, in 2000. All of the children at the three schools studied came from low-income families and were eligible for free school lunches.

The 96 children interviewed in 1998 consumed an average of 1,800 calories daily. They took in 251 grams of cholesterol and 26 grams of saturated fat, and ate a fruit or vegetable about three times a day.

In 2000, the 241 children interviewed were averaging 1,607 calories a day and eating fruits and vegetables four times a day. They ate about 201 grams of fat and 19 grams of saturated fat daily, while their percentage of calories from fat fell from 33 percent to 31 percent.

Nearly all of the increase in fruit and vegetable consumption occurred at lunchtime.

The fruit and veggie choices for kids are a far cry from the limp lettuce and soggy tomatoes people may remember from the early days of salad bars, Slusser noted. Children are offered about six choices of fresh fruits and vegetables, cut into easy-to-eat pieces.

"There was a big effort to make the food that was in the salad bar really appetizing," she said.

"The more variety you offer, the more likely the child will take what they like, or have what they like," added Slusser, who noted that research has shown exposing kids repeatedly to a food increases the chance that they will try it, and come to like it.

Increasing kids' fruit and vegetable consumption is "one of the few interventions all along that we've been able to identify as a way to prevent childhood obesity," Slusser said. "We know this is something that makes a difference."

SOURCE: Public Health Nutrition, December 2007.

Copyright © 2007 Reuters Limited. All rights reserved. Republication or redistribution of Reuters content, including by framing or similar means, is expressly prohibited without the prior written consent of Reuters. Reuters shall not be liable for any errors or delays in the content, or for any actions taken in reliance thereon. Reuters and the Reuters sphere logo are registered trademarks and trademarks of the Reuters group of companies around the world.