Perceived Barriers Limit WIC CVV Use in Arizona (audio) Elsevier Health Sciences Share Print E-Mail Loading audio... Caption WIC provides cash value vouchers to participants specifically for fruit and vegetable products, however, researchers have discovered that some barriers to purchasing nutrient-dense foods still exist for WIC participants. Christopher Wharton, PhD, discusses a recent study of WIC participants in Arizona. Credit Journal of Nutrition Education and Behavior Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.