http://newsroom.ucla.edu/portal/ucla/kids-eat-more-fruits-and-vegetables-40698.aspx

A new UCLA study has found that elementary schools can significantly increase the frequency of fruit and vegetable consumption among low-income students by providing a lunch salad bar.

The findings, published in the December issue of the international peer-reviewed journal Public Health Nutrition, show that the frequency of students’ fruit and vegetable consumption increased significantly — from 2.97 to 4.09 times daily — after a salad bar was introduced. In addition, students’ mean daily intake of energy, cholesterol, saturated fat and total fat declined considerably.