Below is a brief summary and links to the full text program announcement (both R21s and R01s):  Impact of Health Communication Strategies on Dietary Behaviors. 

Executive Summary

Purpose. This funding opportunity announcement (FOA), issued by the National Cancer Institute (NCI), the National Heart, Lung, and Blood Institute (NHLBI), the National Institute of Child Health and Human Development (NICHD), the National Institute on Alcohol Abuse and Alcoholism (NIAAA), the Office of Behavioral and Social Sciences Research (OBSSR), the NIH-Office of Disease Prevention (ODP), the Office of Dietary Supplements (ODS), the U.S. Food and Drug Administration (FDA), and the Centers for Disease Control and Prevention (CDC), encourages applications for research projects focused on the development and implementation of effective communication strategies related to diet and health. Specifically, this FOA is designed to promote interdisciplinary research, conducted at multiple levels (e.g., individual, community/environment, and policy) and across diverse populations, to evaluate effective communication approaches for changing dietary behaviors.

R21:  http://grants.nih.gov/grants/guide/pa-files/PA-08-240.html

R01:  http://grants.nih.gov/grants/guide/pa-files/PA-08-239.html

Please contact me if you have any questions related to responding to these Funding Opportunity Announcements.  Thanks!
Amy Lazarus Yaroch, Ph.D.
Behavioral Scientist
Program Director
Health Promotion Research Branch
Behavioral Research Program
Division of Cancer Control and Population Sciences
National Cancer Institute
E-mail: yarocha@mail.nih.gov

http://healthpromotionresearch.cancer.gov