FNS is frequently asked, by a variety of nutrition education partners, how it defines a sound impact evaluation. The principles introduced here describe the characteristics of strong impact assessments of nutrition education. They are also consistent with the Government and Performance Results Act and the Office of Management and Budget’s guidance for clear demonstration of program effects.

The national nutrition safety net consists of 15 programs that provide millions of low-income Americans access to a healthy and nutritious diet. It has been observed that many low-income individuals are both overweight and participants in one or more nutrition assistance programs. This has led some to question whether participation in the nutrition assistance programs contributes to the growing problem of overweight and obesity. This report presents the conclusions of an expert panel convened by the Food and Nutrition Service to determine if there is scientific evidence of a relationship between program participation and excess weight.